Sort by
Relevancy

Free Stories

85%
My Awkward Phase
My Awkward Phase ©Alexandra Rios 2019 The greatest lie is that what happens in high school doesn't matter, because life begins in college. I pretended to agree, although I never believed it, for I was the world's greatest liar. Wannabees I was hanging out with my friends Quinn, Barb and Anne ... Read full Story
the greatest liar 2019-06-14 12,585 Small Tits anal sex Latina Masturbation Bareback Creampie Blowjob Big Cock transformation gangbang Shemale and Girl Guy Fucks Shemale Sex Toys Ass to Mouth cosplay hormones high school real life situations
100%
A Perfect Pandemic: A Transsexual Transition in a Troubled Time
A Perfect Pandemic A Transsexual Transition in a Troubled Time A Novelette by Alexandra Rios Text Copyright Reserved © August, 2021 Dedication Transgender Day of Remembrance is a solemn occasion. I am offering “A Perfect Pandemic” for free as an antidote to the fear, phobia, discrimination, d... Read full Story
the greatest liar 2021-11-16 6,677 Teen (18+) Crossdresser Group Sex Big Tits Bareback Creampie Big Cock gangbang domination Guy Fucks Shemale Interracial double anal webcams
100%
Hung Trans Lesbians Fuck Two Ladyboys
Note 1: If you like Transsexuals, Trans Lesbians, Asian Ladyboys, Big Cocks, Extreme Cock Sucking, Anal Fucking, Anal Fisting, Semen Swallowing, Role Play, Orgies, BDSM, Cock Sounding and Foot Fetish this story is for you. Note 2: All the characters are over 21. The names are fictitious, but some... Read full Story
darrell 2022-01-03 5,014 Group Sex Big Tits Cumshot Bareback Fetish Blowjob Big Cock Asian Ladyboy Sex Toys Mature cum in mouth shemale + shemale
100%
spending the whole weekend as a sex slave
i met a dirty old man who owns run down motel he has put me in what he calls the honeymoon sweet im dressed like a cheap $1 whore. ive bean fucked by 12 different men so far i dont even know what they look like as i have a blind fold on load me he ties me up before they come in they load me up on po... Read full Story
paul greenwell sissy 2024-11-04 1,311 anal Crossdresser Amateur Group Sex Big Tits Bareback Creampie Blowjob blonde Big Cock gangbang Sex Toys Ass to Mouth
66%
Be My Bitch
After a long day at work, I get in my car, and look forward to the long drive home. It gives me time to unwind and relax. I try to forget about the hectic office and concentrate on my beautiful girlfriend waiting at home with that warm smile that she greets me with when I get there. However, tod... Read full Story
Go Balls Deep or Go Home 2018-08-06 32,115 Crossdresser Outdoor Bareback Blowjob Big Cock Ladyboy Lingerie domination Guy Fucks Shemale Interracial Sex Toys Ass to Mouth cum in mouth
92%
Nicole and I the final chapter
So I haven’t written any stories in a while , so if you read mine before you should like this one I didn’t write it yet cause it’s about my last encounter with Nicole. Very sad day for me lol but a very good story. So here goes........ Nicole and I had been going over a year now and everythi... Read full Story
Duke04 2018-03-07 4,725 Stockings Blowjob Big Cock redhead Sex Toys Ass to Mouth cum in mouth
100%
Florida TG Experience
I had known Jan from High School, we always had an attraction for each other but were dating someone else or married at the time. Jan had actually married a friend of mine and I was envious of course. She at that time had sandy blonde hair, and a body to die for. One evening we had them over for dr... Read full Story
Jon Paul 2018-08-13 11,783 Group Sex Big Tits Bareback Creampie Blowjob blonde Asian Ladyboy Shemale and Girl Guy Fucks Shemale Ass to Mouth cum in mouth double anal
85%
A very hot encounter
I've had been feeling way too horny for days; masturbating every night to shemale porn. I've always loved transexuals. There's nothing better than a very hot body with a fairly large cock to be sucked and drained of hot cum. There's something even kinkier for me about a top shemale. I imagine that c... Read full Story
shemale lover 2012-07-08 5,064 anal Cumshot oral Sex Toys spanking
75%
Erotic Cummings
For the last few years, my ex-wife and I have engaged in a torrid affair. You see I am a avid cross dresser, who enjoys playing the role of a uninhibited female sex slut, who shares herself with women. This game allows my ex (Amanda), to keep most of her marriage vows intact, while allowing her to e... Read full Story
shemale lover 2012-03-23 3,535 anal cum oral Sex Toys
90%
Saving My Marriage
I love to write Erotica. For story requests please send me a private message or email noirenoire10@gmail.com It was our anniversary. Today made five years that my wife and I have been married and we were taking a road trip to celebrate. I chose our destination but I let her choose all of our a... Read full Story
therefill05 2021-02-16 6,683 Cumshot Bareback Creampie Shemale Fucks Guy threesome Blowjob Big Cock Ebony domination Sex Toys cum in mouth
100%
Reshooting the Scene, Chapter 1
I have been a porn aficionado since I was a teenager. My first dabblings were with Hustler magazine and a *very* hardcore mini-novel called “Her Busted Asshole,” which told the raunchy story of Ginny Cummings’ sexual coming of age. In addition to the very graphic story, it had full color glossy p... Read full Story
Lovelace 2021-06-07 5,122 Bareback threesome Blowjob blonde Big Cock Sex Toys Ass to Mouth
100%
Threesome goes clubbing
Ft. Lauderdale is probably the most LGBT friendly city on the east coast. So many nice restaurants and clubs that welcome all and have many LGBT employees as well. Lydia and I have been married several months, we had met Joanne an absolute amazing transgender girl during a weekend trip to the Baha... Read full Story
Jon Paul 2021-07-08 5,709 Big Tits Cumshot Bareback Creampie threesome Guy Fucks Shemale cum in mouth
92%
MY Party Favor Fantasy
My Party Favor Fantasy A fictional story built around an old fantasy of mine I ran a notice on one of those sex sites that said” Help me fulfill my fantasy and I bet we take care of some of yours also. Hi there, I am Penny and I am a total bottom trans w... Read full Story
pennypenny 2019-01-08 7,828 Stockings Crossdresser Group Sex Cumshot Masturbation Bareback Creampie Fetish threesome Blowjob Big Cock gangbang Lingerie redhead domination Guy Fucks Shemale Sex Toys Ass to Mouth cum in mouth double anal
80%
Group Sex
Jan and I have been together now about 4 years but known each other since High School. We are both in our early fifties. We had met a transgendered girl (Gabby) about a year ago and we get together about once a month and enjoy each other’s company, going out playing and having intimacy together. Gab... Read full Story
Jon Paul 2021-04-19 3,768 Group Sex Cumshot Bareback Creampie Shemale and Girl Guy Fucks Shemale cum in mouth
83%
A Fairy Tale Part 1
=-=-Chapter One-=-= "Heather?" My boyfriend was knocking on the bathroom door. "What's wrong, are you okay? Heather?" "Yeah..." I swallowed thickly and that was a mistake. I threw up some more, kneeling on the floor, feeling like I was dying. "Heather?&q... Read full Story
shemale lover 2011-12-06 12,201 Bareback cum ass fucking slave
100%
Police House Call
My heart was beating a mile a minute when I heard the knock on my door. I was hoping that it might be Beau, or Larry, or if I’m lucky it would be Tom Cobb. He asked me to call him Tommy. I had been thinking about him recently. Bo and I had banged the night before, but I was as horny as ever. Larry w... Read full Story
Regina10 2024-04-19 4,186 Crossdresser Big Tits Bareback Blowjob Big Cock Ebony Guy Fucks Shemale big ass femboy cum in mouth
100%
A Night of Makeup, Cock and Cum
It was all I could do not to accept. After all, it's been a fantasy of mine for years. When given the opportunity, I had to go for it. I had been surfing the internet for crossdressers, shemales, transvestites and transsexuals. The idea of a hot woman with a cock had always turned me on. Further,... Read full Story
shemale lover 2012-04-18 5,188 Cumshot jerking off domination Sex Toys cum swallowing
100%
Five Into Three Does Not Go
Kristina It is waspish in the late evening out in the open in Portsmouth Harbour as we step out of the vehicle and walk over to the private section of the docks, the sign says Ceres St docks. Dark has long since fallen but lights, white, yellow and orange light up the skies. The feeling is one of... Read full Story
shemale lover 2012-11-07 5,077 cum oral sex Sex Toys
66%
Trannies in Space
There was no spaceport on Jansen's Planet. There had been, but whatever calamity had befallen the world generations ago had also destroyed its port. It was one of so many planets out in the Barrens that had fallen on hard times. So Dekker set down the Barnabas in a clearing in the forest, a remna... Read full Story
ASSEaster5678 2019-01-25 12,787 Shemale Fucks Guy Guy Fucks Shemale Sex Toys space robots
66%
intimate Cousins
My favorite cousin and first lover, Billy, was just released from prison and I was anxious to see him. I am ecstatic that he is out, and I am thinking about all the past fun we had as I prepare to revisit those good times. Tommy knows all about my relationship with Billy and he understands my need t... Read full Story
Regina10 2022-05-13 6,610 Stockings Crossdresser Cumshot Masturbation Bareback Blowjob Big Cock Ladyboy Guy Fucks Shemale Ass to Mouth cum in mouth double anal
100%
FoxxiRoxxi xdresser slut fucked by BBC
Well this has been a fantasy I have had for a long long time .I'm a married man with a family and love fucking my wife she has a shaved pussy and a few sex toys so our sex life is good. However I have been xdressing on and off for about 12 years now and I really love it . I really love the feeling I... Read full Story
shemale lover 2012-08-02 3,432 anal sex Cumshot threesome throatfucking
100%
Dear Karen Chapter 6
07.13.09 Dear Karen, Well, I have had quite a surprise. I came home at lunchtime recently and found BJ had a visitor. I walked into the bedroom and there was BJ and Frank. BJ was only wearing a bra and panties along with stockings held up by a garter belt. He was on his knees beside the bed an... Read full Story
shemale lover 2012-08-06 2,965 oral sex Sex Toys facefucking
100%
Discovering Mistress Sarah's World Part 6
Chapter 15 Joe's first 'female' public appearance as Josie was approaching fast. He was nervous about it. Fortunately Mistress Sarah had kept him busy most of the day so his mind was distracted. Shortly after his mind blowing masturbation session with her in the morning, she left to run errands a... Read full Story
shemale lover 2012-10-03 4,605 first time domination Sex Toys
90%
DISCOVERING BLACK COCK
To the greater Boston general public it was simply a small little known quite private night club located in the back part of Roxbury called The Black Rooster Bar. While in local Gay Community circles, insiders called this private by membership only pub, THE BLACK COCK CASTLE! When first learning... Read full Story
CD DIXIE IN NH 2016-05-10 10,749 Big Cock cumming sperm ebony cock
50%
Not your usual birthday present
So here we go again “Happy Birthday” to me, at 51 it’s not that great really it’s just a reminder your getting older!! Anyway here I am 51 having an absolute ball and fulfilling my wildest dreams, Justina likes being out of the closest and loooooves cock.. So for her birthday she hopes someone has ... Read full Story
Samantha Jewels 2022-01-12 3,203 Stockings Crossdresser Amateur Blowjob Big Cock gangbang Lingerie domination Sex Toys Mature cum in mouth
100%
Crossdressing in a Hotel
Jamie was feeling excited as he entered the hotel room. He had been looking forward to this for weeks, and now he was finally here. He had dressed himself up in sexy lingerie, and had brought his toys with him. He had a normal dildo, a big dildo, a normal plug and a very big plug, and plenty of lube... Read full Story
Fischermensfriend246 2023-01-11 5,384 Crossdresser Amateur Bareback Blowjob Big Cock dildo Lingerie Interracial Sex Toys Ass to Mouth webcam webcams
100%
Dress Up
I don't know how to explain it. I am not gay although I may be passive bi. I have had sex with men, but not a lot and I have always been the one receiving, you know once a friend showed me a pack of pictures of his wife from fully dressed in conservative suit to complete nude with some action photos... Read full Story
shemale lover 2012-11-17 4,980 Fetish cum oral sex Sex Toys cum swallowing
100%
The Experience of a Lifetime
My divorce was hitting me really hard. My wife outgrew our relationship and started living her own life and I had a front row seat to everything. My heart and life was upside down. I didn’t go out anymore. Friends and family both told me it was time to get my life back on track and start living ... Read full Story
therefill05 2020-11-30 20,987 Big Tits Cumshot Bareback Creampie Shemale Fucks Guy threesome Blowjob blonde Big Cock Ebony Uniform domination cum in mouth
100%
Tight Spot
XtinaSmith2017 Cody bit his lip as he looked over towards the shop, a little anxious about their planned endeavor but not wanting to come off as uncool to his friends, "Are you sure this is a good idea?" he asked. His friends grinned and laughed, playfully nudging him as they made their way ... Read full Story
Gwapo67 2022-07-22 6,442 Big Tits Bareback Creampie Shemale Fucks Guy Fetish Blowjob Big Cock Lingerie domination cum in mouth
100%
Head Cheerleader Mikki
At 18 i was your average kid in high school. Decent grades played sports. I was on the volleyball and swim teams. I was about 5'7" 145 lbs and in good shape. My girlfriend was 19 and used to be the head cheerleader at our school. She was gorgeous. Her names Donna and she was a freak when it ca... Read full Story
shemale lover 2012-06-08 3,955 Cumshot oral sex Sex Toys crossdressing
100%
Head cheerleader Mikki
At 16 i was your average kid in high school. Decent grades played sports. I was on the volleyball and swim teams. I was about 5'7" 130 lbs and in good shape. My girlfriend  was 19 and used to be the head cheerleader at our school. She was gorgeous. Her names Donna and she was a freak when ... Read full Story
Mikki A. 2012-06-18 4,557 anal Cumshot oral Sex Toys cd
100%
All Right I'll Do It Chapter 3
The door closed and the four of them were gone. I stood there overwhelmed with the dried and drying cum on my face and in my hair. Dave's pee and cum was still deep inside me and my throat ached from Robert's cock. But Dave had me really scared so I decided to clean up the house as he said despit... Read full Story
shemale lover 2012-10-11 4,712 Cumshot pissing Sex Toys cum swallowing
80%
How it started
What got me started off watching shemale porn was actually meeting a very beautiful shemale at a beach party. I already knew she was a guy but she was so beautiful. So at one point I asked her if she wanted to go for a walk and after a few minutes and let her know that I was down. Her response was ... Read full Story
PNPFUCKBOY 2019-02-12 12,544 Teen (18+) Small Tits Crossdresser Amateur Big Tits Outdoor Latina Bareback blonde Big Cock Ladyboy domination Guy Fucks Shemale Interracial Sex Toys Mature Homemade Ass to Mouth
92%
My Seductive Secret (True Story)
During my childhood, me and my brother used to play with two other boys who were our neighbors every weekend. One day we decided to wrestle, and I took on the youngest one, (he was about 2 years younger than me, like my brother) and we wrestled in the shed while my bro and his bro (who was my age) w... Read full Story
LovelyLeo97 2019-06-18 14,720 Stockings Teen (18+) Small Tits Crossdresser Cumshot Outdoor Masturbation Bareback Fetish Blowjob Big Cock Lingerie domination Sex Toys Homemade cum in mouth
85%
My Orgasm at work
I finally found my sexual fantasy come true at work. I always fantasize about one of my female co-workers (and sometimes all of them) dominating me, pegging me, brutalizing me. That every time they walk by my office, they would pour their coffee on my floor next to my feet and i'll get on my knee... Read full Story
LovelyLeo97 2019-06-21 7,535 Teen (18+) Crossdresser Cumshot Latina Bareback Fetish Uniform Lingerie domination Sex Toys
40%
vince
been gang banget by a group of bikers on my way to vegas..it was like 2.15 am when i pulled of the 15fwy to take a piss because it was hot and i was driving naked got out it was a dirt road and i walked to the bushes and started pissing when all of a sudden a bunch of bikers were rite at my truck i... Read full Story
ima satisfer 2020-06-03 4,542 Group Sex Outdoor Bareback Blowjob Big Cock gangbang Interracial Sex Toys cum in mouth vegas gang bang
100%
TO BE OR NOT TO BE – PART 6
TO BE OR NOT TO BE – PART 6 by Spanky de Bautumn Part 5. Sunny and Antonio got frisky at the bar, Sunny moved in with Mel and Shari, and opening night was a success The only other dress that I brought was one that I hoped I would get a chance to wear but didn't think I would. It was a black ... Read full Story
SpankydeBautumn 2021-02-26 2,926 Crossdresser Cumshot Masturbation Bareback Creampie Blowjob Big Cock Lingerie Guy Fucks Shemale cum in mouth
50%
She also conquered my soul...
Initiation in a new era... Almost three months since I offered my virginity to a wonderfull he-woman, Selmi... unfortunately I had to cancel the second day we planned to spend together with my LORDESS because I quitted the town where we met the day before. Since, only few summer fling messages...... Read full Story
hippocampus_171 2022-11-22 4,539 Crossdresser Amateur Cumshot Masturbation Creampie Blowjob redhead domination Sex Toys Mature Homemade Ass to Mouth cum in mouth
75%
Encyclopedia Erotica By The Fan
It was a normal-looking enough place. A small town in California. Looking at it, no one would ever guess it sat on the hellmouth. The Mouth of Hell. A portal to a multitude of dimensions filled with horrors and wonders. Many things came to the Hellmouth, drawn by its power. Vampires. Demons. Mon... Read full Story
shemale lover 2011-10-19 4,901 asshole orgy Sex Toys
100%
The New Nii
The bedroom door opened and the two lovers walked down the hall into the living room side by side. Deena was wearing her nightshirt that she wore a lot, and Jeffery was nude, and he picked up his clothes that I had put on the chair and began to get dressed. “Jeffery is going to go and get dinner an... Read full Story
Setinkhan 2021-05-28 6,148 Crossdresser Fetish threesome Big Cock Shemale and Girl domination Interracial Sex Toys
50%
My friend Barbara,
My friend Barbara, I look forward to welcoming Barbara. She is a lovely brunette with blue eyes who likes to make love without taboos. She knows how to bring our fantasies to life by imagining exciting role-playing games. - You're going to fall in love when you discover my underwear, she assur... Read full Story
sandratvtg 2024-07-04 3,420 Stockings Bareback Fetish transsexual Lingerie Sex Toys travesti Vintage rosebud plug gonflable gode xxl
100%
A Weekend Together Chapter 1
My fiancée and I, decide one weekend to indulge in my fetish of cross-dressing. We rented a hotel room down town across the street from the local gay club for Friday and Saturday night. I checked in when I got off work Friday afternoon upon entering the room I stripped of my male clothes and ... Read full Story
shemale lover 2012-07-23 4,194 Fetish oral Sex Toys crossdressing
100%
Booty call :)
Your cock pounds my ass harder, my cheeks rippling with every deep thrust you give. The sounds of our moans and your balls slapping as you fuck me hard is suddenly broken by the ringing of your phone........... And you wake up. It's 2:30am and I've just finished work. As arranged, I'm giving... Read full Story
BalkanLoco91Ri 2019-08-26 5,899 Teen (18+) Amateur Cumshot Masturbation Bareback Creampie Blowjob Big Cock domination Sex Toys Homemade pov Ass to Mouth cum in mouth
100%
First Date With Daddy
My Dream Date. It hasn't happened yet, but a girl can hope, this story is very short story based on my fantasy's. It was Sunday night and I had my first date lined up with daddy. We hadn't met, but we had spoken online at depth and exchanged numbers. I had sent him a couple of pic... Read full Story
SEXYBADGIRL 2023-03-17 5,557 Crossdresser Bareback Creampie domination
100%
Alessia Travestita Hung Mature Blonde British Porn Star
Alessia Travestita Hung Mature Blonde British Porn Star If you like Transexuals, big cocks, bondage, domination, deep throat, fisting, spit roast, 69, ass fucking, cum swallowing and big loads this story is for you. If not don’t bother reading. If you like my story please leave comments and ... Read full Story
darrell 2022-01-03 5,681 Group Sex Cumshot Bareback Shemale Fucks Guy Blowjob Big Cock gangbang domination Sex Toys Mature cum in mouth shemale + shemale
100%
My 1st Time was Not the Only Time.
One late night after hitting the slopes and partying I left my friends birthday party feeling extra horny. It was about 6 or 7 in the morning now and after having no luck finding an escort I responded to an ad on craigslist posted by a trans woman. I figured two things, this dick isn't going to suck... Read full Story
LesFuax 2019-02-16 9,694 first time Small Tits Amateur Latina Bareback Creampie threesome Blowjob Big Cock ass fucking barebacking barebackedshemales first time with a tranny raw anal raw dick raw fucking firsttime
87%
smoking
Greg decided to go straight. I had to find a new place to live. A nice man, Pete, who I knew from the YMCA, offered me a place in his basement. He was going to rent it out. It was nice, full kitchen, bedroom, laundry room, living room and another space for anything I would need. His rent was che... Read full Story
cd4fun715 2019-01-08 3,245 Amateur
100%
Surprise Ending (Part One)
My wife is the picture of professionalism from 8 to 5, but after hours she is a sexual dynamo who loves men and women. Throughout our relationship she has introduced several of her gal pals into our bedroom, hot tub, shower, etc...you get the idea. Anyway, two weeks ago she let me know that one o... Read full Story
Chantel13 2022-08-23 6,048 Crossdresser Amateur Group Sex Outdoor Bareback Shemale Fucks Guy threesome Big Cock Shemale and Girl Guy Fucks Shemale Ass to Mouth cum in mouth
80%
GRANNY TRANNY'S HOUSE of SIN
It all began after my husband died and I was living alone. I decided to adopt a family and corrupt their minds. You see, I'm an ex SHEMALE PORN STAR and I like to live a wild life and I figured after my husband died I should relive my wild life and be happy. I reached over for my GOLD METAL MESH CIG... Read full Story
BITCHGURLvr 2024-11-09 9,165 shemale cum sex Cigarettes
75%
Amy Finally Lives Out Her Fantasies Part 2
"Wow! What got into you?" "I don't know, I just decided to finally loosen up and go with my desires," she explained. "Did you enjoy it?" "Are you nuts? I LOVED every second of it!" I exclaimed. Figuring the alcohol played a very large role in her sudd... Read full Story
shemale lover 2011-09-15 4,060 Big Tits ass fucking fishnet
78%
How I Became the Sissy Slut
It all started when I was about 11. I was a very petite and short and had long straight brown hair with whispy bangs as a child. I was often mistaken for a girl. I have a sister who was 6 years older than me about my size she used to dress pretty sexy with the tight jeans and the skin tight sailor b... Read full Story
Tvtrinity 2016-08-29 73,029 Teen (18+) Crossdresser transgender sissy slut.trinity
0%
The Greatest Lie Part 19
The booked me as Alex Rios and handed me an orange jump suit and slip-on boots. I changed in a tiny curtained alcove and relinquished my clothes, shoes and purse, and became Inmate 265743. The booking clerk ignored my pleading eyes, so I begged. "You can't put me into a male population. I... Read full Story
shemale lover 2012-01-21 5,253 hardcore femdom erotic encounters
80%
The Grass Ain't Always Greener...
Lawn care takes an unexpected voyeurism and exhibitionism masturbation detour I cut grass, mow lawns, manicure shrubs, trim bushes, and plant trees. Right handed and always trimming from the right side, I've never been a switch hitter when using my hedge trimmer, if you know what I mean. Always ... Read full Story
shemale lover 2013-01-16 5,539 Masturbation Blowjob blonde jerking big boobs
98%
When Fantasy Comes True 2
After my first threesome encounter with Jenni and her friend, getting a golden shower from three trans women was a bonus. Being drunk and now four of us snuggled in bed, i thought the night had ended but i did hope for more. I was not disappointed as Jenni's friend (Sasha) who had been sleeping d... Read full Story
Sara Banks 2018-10-22 12,313 Group Sex Cumshot Bareback Shemale Fucks Guy threesome Blowjob Big Cock gangbang domination Ass to Mouth cum in mouth golden showers golden shower
100%
Lola Chapter 5
Lola chapter 5 Summer vacation was coming to an end. Most of the time we had been to ourselves, mostly at home but also a couple of shorter trips. Beer tasting in Stockholm's archipelago, a trip to the west coast, overnight stays in hotels, everywhere we were received like any other couple. A fam... Read full Story
BellaBeau 2023-10-30 6,425 anal Cumshot Latina Bareback Creampie threesome Shemale and Girl Lola
100%
an old friend
I hadn't heard from one of my oldest friends Dave for many years, we used to play in a band together, hang out and occasionally watch porn together after a night out drinking, with Dave usually falling asleep with a lit cigarette in his mouth, he is about 5'7'' medium bordering on at... Read full Story
NWLexxxi 2024-12-26 1,676 anal Crossdresser Bareback threesome breeding mmf