Sort by
Relevancy

Free Stories

85%
The Gang
I had always thought of myself as female in spite of the fact that I was born with male genitlia. Even in my earliest memories where I had witness sex, I identified with the female in the relationship. As a small young child, I had always longed for womanhood each time I heard a woman sing or especi... Read full Story
Regina10 2020-06-29 8,884 Group Sex Cumshot Blowjob Big Cock Ebony gangbang double anal
94%
CD and BBC Gangbang 1
My name is Mike, as a "Gurl" I go by Fiona. I am a gay man, mid thrities, white, 5' 9' 165, reasonably handsome, both in and out of women's clothes. One of the ways I express my sexuality is to dress as a woman and get fucked by other men. Preferably in a humiliati... Read full Story
FionaFucked 2014-10-27 13,824 Group Sex gangbang Interracial cd sissy
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 4,319 Group Sex Big Tits Cumshot Bareback Fetish Blowjob Big Cock Asian Ladyboy Sex Toys Mature cum in mouth shemale + shemale
85%
Gilding the Lilly
It was a dark and stormy night. Oh, wait, I was taught NEVER to begin a story like that. (Snoopy can get away with it, but he does all his writing with a typewriter balanced on his doghouse). OK, getting back to important things. It was actually early Autumn out in the Desert, cool weather was s... Read full Story
CharlotteSlut 2018-03-02 5,998 Group Sex Shemale Fucks Guy gangbang Shemale and Girl shemale + shemale
50%
lust of a sex-agenarian nana-pops
Frenzied lust of a sex-agenarian nana-pops; between dream and reality I had never fantasized of a manly man, even after offering my virginity; to a fabulous sissy. Before my new Era, my fantasy preferences were always with glabrous he-she’s, same about my relationships after… BUT BUT BUT… My last t... Read full Story
hippocampus_171 2023-07-09 4,690 anal Small Tits Amateur Group Sex Masturbation Guy Fucks Shemale Sex Toys Mature small cock big ass sissy femboy
50%
Pa-mie sex-agénaire
Luxure frénétique d’une pa-mie sex-agénaire; entre rêve et réalité Je n’avais jamais fantasmé de mec viril, même après avoir offert ma virginité; mais à une fabuleuse sissy. Avant mon Ѐre, mes préférences de fantasmes étaient toujours avec des lui-femme glabres, idem concernant mes relations d’aprè... Read full Story
hippocampus_171 2023-07-09 836 anal Amateur Group Sex Guy Fucks Shemale Sex Toys Mature small cock big ass sissy femboy Ass to Mouth
70%
Trans Sexual Clinic 04
It was some six weeks since Johnny had attended the clinic with Wendy and now he found himself wanting to go there more and more. He could not get DR. Francine out of his mind, he desperately wanted to have her hard cock in him again as he fantasized about leaning forward and sucking on her delectab... Read full Story
shemale lover 2012-04-12 3,830 Group Sex Sex Toys
72%
Wie sich schlagartig mein Sex Leben änderte... Teil 1
ich war nun schon einige Zeit heimlicher Crossdresser. Nie wurde ich von meiner Freundin erwischt, auch wenn es manchmal wirklich knapp war! Ich hatte ein sicheres Versteck für meine schönen Sachen und meine Sextoys und konnte hin und wieder meine geheime Neigung ausleben wenn sie nicht da war.Trotz... Read full Story
Holly Swallow 2019-03-20 7,765 Stockings Small Tits Crossdresser Amateur Group Sex Cumshot Fetish threesome Blowjob blonde gangbang domination Interracial Sex Toys humiliation Homemade sissy girlfriend chastity cage Ass to Mouth cum in mouth chastity sissy amateur crossdresser fendom
100%
Big Surpise In Small Package
It was a Friday night and I was extremely horny and just my luck my girlfriend was out of town, but I wasn't horny for her I was craving cock. I knew I was bi for a long time and loved to have a nice hard cock to play with every once in awhile. So I decide to call my girlfriend to tell her I was goi... Read full Story
shemale lover 2012-06-11 4,294 anal Group Sex Cumshot Blowjob
100%
Vanessa and the workmen gangbang
The three workmen were slaving away in the back garden, in the hot sun. Vanessa watched them from the upstairs bedroom window, getting more excited by the second. Under her robe she was wearing a beautiful red basque with a red g-string, black stockings and five inch heels. This was topped off with ... Read full Story
Vanessa Luv 2020-05-12 5,566 Crossdresser Group Sex gangbang Lingerie cum in mouth double anal
91%
Lake Surprise
After finals of my first year in college in a northern university, I was ready for some real relaxation back home in the warm south. During finals I had started thinking how nice it would be to borrow my brothers boat and hit the lake for a week. I talked my roommate into making the trip home ... Read full Story
shemale lover 2011-12-08 10,657 anal Group Sex Creampie
100%
Susan's First Time Part 3: Susan's First Party
The chauffer passed through a gate in the high brick fence just as the sun started to slide behind the distant snow capped mountains. The cobblestone driveway that wandered toward the main house must have been a mile or more long. Susan admired the immaculately landscaped grounds as they drove throu... Read full Story
shemale lover 2011-10-13 2,570 anal Group Sex Creampie oral
100%
Club sex the 25yo
There’s a very special private club around, it’d meetings take place in a very secret place. It takes a lot to gain membership. You have to either have a lot of money AND a friend in the club OR you have to take part in the ceremonies for at least a year. Also you have to be willing to b... Read full Story
shemale lover 2011-12-10 4,949 anal Group Sex lesbian
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 5,133 Teen (18+) Crossdresser Group Sex Big Tits Bareback Creampie Big Cock gangbang domination Guy Fucks Shemale Interracial double anal webcams
85%
BANGING AROUND BANGKOK
BANGING AROUND BANGKOK: THE AMOROUS ADVENTURES OF CAITLIN "MEOW" MORRISON after living and working in Thailand/SE Asia for many years i decided to write an erotic story based on some of the people i have known, venues and places i have been, and the P4P night-scene where i spent way too much... Read full Story
bkkldby 2019-06-17 14,084 first time Teen (18+) Amateur Group Sex Big Tits Cumshot Outdoor Bareback Blowjob Big Cock Asian lesbian public place
86%
Alex’s Bottom Slut
So when I was younger, I worked at a pizza place as a delivery guy. It was a pretty boring job for the most part but that all changed one night. I got a delivery to just outside of our range but decided to take it anyways because we were slow. When I got there a very tall and muscular black woman in... Read full Story
Jsmithsub 2019-11-18 56,554 Group Sex Cumshot Shemale Fucks Guy Blowjob Big Cock Ebony gangbang domination Interracial Ass to Mouth cum in mouth
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 11,845 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%
Exposure, Disclosure
The Greatest Liar, Exposure, Disclosure © Alexandra Rios 2019 Author’s Note: This is a continuation of the narrative which commenced with “My Awkward Phase”, which I posted here previously. Readers may wish to read that before continuing, although I have written them to stand alone. Natives s... Read full Story
the greatest liar 2019-06-18 7,600 Teen (18+) Small Tits Amateur Group Sex Latina Blowjob gangbang Guy Fucks Shemale cum in mouth
62%
Crossdressed Lana - Hannover, Germany
Crossdressed Lana - Hannover, Germany Very Sexy & Compliant Sub-Slut Is Searching For Kinky BDSM Live-Dates At Hannover, Germany!!! I Am Bisexual And Want Men, Woman, Couples And Trans For Outdoor, Swingerclub, Porncinema And Public Sex. I Love To Wear Very Hot & Sexy Clothes Like Lingerie, Stoc... Read full Story
Crossdressed Lana 2020-02-06 4,262 Stockings Crossdresser Group Sex Outdoor Bareback Fetish Blowjob gangbang Lingerie domination Latex Sex Toys double anal
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 4,621 Group Sex Cumshot Bareback Shemale Fucks Guy Blowjob Big Cock gangbang domination Sex Toys Mature cum in mouth shemale + shemale
100%
Gangbanged By 3 trannys
Gangbanged By 3 trannys This is a story about the night I was Gangbanged by 3 trannys. I was at a Transgender after hours clubs that was filled with hot ass Tgirls. This tall white gorgeous woman was eyeing me the moment I walked in. She was wearing this fitting blue dress that showed off ... Read full Story
My Shemale Attraction 2022-12-11 8,465 Group Sex Shemale Fucks Guy threesome Blowjob gangbang Ass to Mouth 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 7,250 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
70%
Shemale Gangbang
I am not your average female. But I guess I am not your average male either. You see, I am a tranny. I make a really hot woman. I am 5'10", am slim and have dark, wavy hair that comes down to tight between my shoulder blades. The only thing I was missing was beautiful tits. So I got those as we... Read full Story
shemale lover 2011-08-27 17,401 anal Blowjob cum swallowing
100%
College project surprise
So this story happened while I was still in college and remains without doubt, the craziest, most exciting experience of my life. So I the story begins one day when I walking to class. I went to a big university so my walk was quite long, and the first 1/3 was just through off our campus housin... Read full Story
Jsmithsub 2020-09-16 21,005 Group Sex Bareback Shemale Fucks Guy Fetish threesome Big Cock Ebony domination Ass to Mouth cum in mouth
50%
Freak House Superstar Come Fest
Kiki and Ty Blaze were doing their thing. They were living on their love and passion, literally. The couple had taken their love, passion and desire to please one another and turned it into their livelihood. They had become stars in the world of underground porn. Their production studio, Nasty Nigga... Read full Story
shemale lover 2012-02-01 6,311 anal shemales Group Sex
100%
Big Dick Alessia Visits Dallas
Alessia Hung Mature MILF travels to visit a Big Dicked Man and his Sexy Household If you like Transexuals, big cocks, bondage, BBWs, big clits, deep throat, fisting, 69, ass fucking, sounding, piercing, cum swallowing and big loads this story is for you. If not don't bother reading. If you fav... Read full Story
darrell 2022-04-20 4,328 Group Sex Cumshot Shemale Fucks Guy Blowjob blonde Big Cock Asian Shemale and Girl Sex Toys Mature Ass to Mouth shemale + shemale
95%
First time
Hi, my name is Sandra. In fact, I'm not exactly a girl, but a CD. Even as a child, I felt different and I used every opportunity when I was left alone in the apartment to dress up, to put on women's clothes, to put on make-up. In time, I started watching porn, as did all my friends. But, unlike them... Read full Story
cd Sandra 2021-10-13 5,681 Stockings Teen (18+) Small Tits Crossdresser blonde Guy Fucks Shemale
66%
Dirty Business Trip
Chapter 1: The Transsexual Hotel Encounter "Yes, I am checking in," I said, putting my credit card on the desk. The woman behind the desk took the card and looked at the name. She was about 5 feet 10 inches tall with dark black hair and brown eyes. Her skin was beautifully tanned and he... Read full Story
shemale lover 2012-09-26 12,812 Group Sex Cumshot shemale oral
50%
Dirty Tranny gang bang
Deep breath Charlotte, step into the night air and strut your stuff girl. This is what I was born to do; I snuggle into my short white fleecy coat as my 5” platform heels click on the pavement. Glancing down I can see my shapely stocking clad legs and, the all important, ankle bracelet glit... Read full Story
shemale lover 2011-12-27 4,708 anal shemales Group Sex
100%
New Orleans TS dream come true..
In was on New Orleans running water for the victims of Katrina in 2005. I went down to Bourbon St several times an one night I walked into adult fetish store and as I was looking around there was what appeared to be a very beautiful black woman bending over with a very short skirt on. I was admirin... Read full Story
jim3801 2018-09-11 10,628 Group Sex Bareback Shemale Fucks Guy threesome Big Cock Ebony Guy Fucks Shemale Interracial Ass to Mouth cum in mouth
100%
A Series of Perverse Dreams, Part 1
My relationship with Hannah had always been mutual in the idea that neither one of us was ever truly the dominant one. It was an equal, balanced relationship of mutual fucking and sucking. However, I had REALLY enjoyed being made into a submissive sissy slut by Nikki. Something changed in me after o... Read full Story
KaceyKlarissa 2024-02-24 5,425 anal Small Tits Crossdresser Group Sex Big Tits Outdoor Big Cock gangbang domination sissy femboy Ass to Mouth cum in mouth
50%
A Married Marilyn
"Class is dismissed. Don't forget the project due…" "Huh, what?" Marilyn woke up disoriented from her nap. When she finally came to, she vaguely remembered some project for Intro to Computer Science, gathered her legs from the chairs in front of her, dusted off her b... Read full Story
shemale lover 2012-03-18 7,158 Group Sex Masturbation sucking Sex Toys
42%
sexy jane story
I love the idea being a crossdresser wearing women outfit bars in panties n sexy outfit not just for the sex I love sex being on my knees sucking cocks in getting fuck by a big cock see win I was very young I had sex with 3 guys one day they ask me will I suck there cocks in I sand yes we want insid... Read full Story
45sexyjane 2019-05-27 4,204 Small Tits Crossdresser Amateur Big Tits Masturbation Blowjob blonde Big Cock gangbang Lingerie Sex Toys shemale + shemale sexy crossdresser
100%
Slutty Sissy's 2 Loves
Tonight was young and I was already hot and bothered, my ass-pussy was on fire, and I could hardly wait for Bob and John to come over. I had invited them over to fulfill those erotic dreams I am constantly having about the two of them using me like a tool, and I wanted that so bad. I fantasized abou... Read full Story
Regina10 2020-11-23 4,971 Group Sex Big Tits Cumshot Bareback Blowjob Big Cock Ladyboy Lingerie Guy Fucks Shemale pov Ass to Mouth cum in mouth double anal
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 9,111 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
100%
Becoming Marie Chapter 4
During the following week I had gotten hornier and hornier thinking of the wekend visit to the air raid shelter. I popped into town during the week to get some make up and some clothes to wear for the following Sunday. This was going to be a bit awkward, but egged on by my urges i set off shopping. ... Read full Story
shemale lover 2012-03-23 3,308 anal Group Sex oral Sex Toys
0%
Black Transsexual Nation
Big black transsexual women are truly beautiful. And the big and sexy bisexual and heterosexual men who love us are truly wonderful. I ought to know, I'm one of these magnificent black transsexual ladies. My name is Amanda Joan Baxter, friends call me A.J. I'm a big and tall, big-breasted, wide-hipp... Read full Story
shemale lover 2012-07-06 4,469 tranny Group Sex cum Ebony oral sex
100%
Tranny Gang Bang
Gang Banged I stood there looking in the full length mirror very pleased with the image I saw. I was ready for the evening and the first time I would be with more than two men at once. Freddy, had talk me into doing him and two of his friends in a sleaze motel. Freddy had found me on my internet... Read full Story
shemale lover 2011-11-12 4,727 shemales Group Sex gangbang
72%
The Weekend
The weekend A story inspired by the very sweet and sexy samantha satine and my beautiful wife Part 1 - The preparation samantha packed her suitcase with her usual attention to detail, makeup, lingerie, wigs, but no dresses. Her head was confused by this, Master D had given her instructions... Read full Story
MasterofSissies1 2018-12-04 8,669 anal tranny Stockings Crossdresser Group Sex gangbang oral domination Guy Fucks Shemale transvestite schoolgirl School uniform maid uniform
100%
My Noisy Upstairs Neighbors Part 3: Making Porn
In Part 2, I recounted how Paul, my commanding upstairs neighbor, coerced me into making porn with him and his younger roommate. Now, I'm excited to share the first video we created together. At 12:45 PM on Saturday, I nervously approached Paul's door. After knocking, Paul opened it with a smile ... Read full Story
Chrissy Tunnell 2024-07-16 635 Crossdresser Amateur Group Sex Bareback Fetish Blowjob Ladyboy gangbang Lingerie domination Guy Fucks Shemale sissy femboy
100%
Sissy Slut Reunion
Rob had moved back to town and called me. He had just moved into his new place and he wanted me to come by and talk. I knew what he really wanted from the tone of his voice, because I wanted it too. He said he had been thinking and dreamed about me the whole time he was away. My spirits lifted and ... Read full Story
Regina10 2020-09-14 4,165 Crossdresser Big Tits Cumshot Bareback Creampie Fetish Big Cock Ebony Ladyboy Guy Fucks Shemale Ass to Mouth cum in mouth
100%
The Invitation
"You see, we have to come up with something that would be so embarrassing for you that there is no way that you would ever show those pictures of me to anyone, regardless of how d***k you got, or how horny you got or how pissed off at me you were,” Sally went on. “Something that wou... Read full Story
shemale lover 2012-03-20 6,094 Group Sex crossdressing feminization
100%
Camming Down the Rabbit Hole Ch. 07
Opening my eyes I struggled a little as the residual cum on my face from last night’s show hadn’t been fully wiped off, I felt the dry and crusty leftovers crinkle on my skin, but couldn’t help but smile to myself as I remembered how it had got there. The intensity of that orgasm had been on another... Read full Story
Dani_does_Dallas 2021-10-22 6,315 Stockings Small Tits Crossdresser Amateur Cumshot Masturbation Fetish Lingerie Sex Toys Homemade self sucking pov cum in mouth
50%
The Zodiac Coins: Libra
2400 YEARS AGO... He was a humble shepherd. It was night and the flocks were sleeping. As he gazed at the stars, he saw a shooting star. He knew it was a portent of some kind, but was not mystic enough to know what. A little while later he saw another shooting star and guessed that wha... Read full Story
shemale lover 2011-10-18 4,648 Group Sex Masturbation shemale oral
50%
How My Wife Became a Swinger
Hello, my name is Jackson, Jack for short, and I'd like to tell you about my wife and I and how we became swingers. I've changed the names of people and places to preserve privacy. Just so you know this does involve male on male sex and inter course with a transsexual. So let me begin. For the fi... Read full Story
shemale lover 2011-11-13 5,193 Group Sex Cumshot sucking doggy style
78%
A Little Girl Forever
Since I was a little girl I dressed in my sister's clothes, she knew it and she kept clothes for me and sometimes she bought clothes thinking about me. She was my accomplice and still is. When I was alone I dressed totally as a woman and I felt totally satisfied and realized as such, this included m... Read full Story
Mabel Cecilia 2019-05-06 8,020 Small Tits Crossdresser Amateur Cumshot Latina Masturbation Creampie Blowjob blonde Lingerie Shemale and Girl Guy Fucks Shemale Sex Toys Mature self sucking Solo Shemale cum in mouth double anal shemale + shemale
100%
Secrets
Jon had invited me to spend another weekend at his place with another of his friends. I always find his friends to be interesting so I accepted. Jon had given me a garage door opener and a key to his home after my first visit. He met me as I parked my car in the garage. He was wearing his usual skim... Read full Story
shemale lover 2011-11-01 6,038 anal Blowjob transvestite
100%
Case of the Jealous Transsexual Chapter 2
Dee-Dee was becoming a little possessive after the 2 times that we had seen each other. She began calling me everyday, emailing me, wanting to know when will we see each other again and so on. To tell you the truth I had moved on. I had done everything with Dee-Dee that I felt could be done on a phy... Read full Story
shemale lover 2012-03-19 3,319 Group Sex Big Tits Cumshot
100%
Fulfilling A Girl's Male Fantasy Part 2
Since our first meeting had gone so well, Jennifer and I started going out together. Other than the fact that in the bedroom I was the "man" only about half the time, it was a fairly normal relationship, apart from possibly being even more open with each other about our desires. One day a ... Read full Story
shemale lover 2012-04-04 4,377 Stockings anal sex Group Sex Blowjob
100%
A Schoolgirl Story Chapter 2
I must apologise for the amount of time that it has taken for the second chapter of this story to come out. I have to admit that I had kind of abandoned it, but all your lovely feedback comments made me decide that I couldn't leave this one hanging. So thank you to everyone who wanted more of Wendy,... Read full Story
shemale lover 2012-06-05 8,497 Group Sex Cumshot oral sex assfucking
100%
Freddy Gets Two Cocks
First a bit of background to this story. This is an actual account of one of my experiences. I am a male cross-dressing Bi-sexual. Versatile but prefer to take the sub bottom role. Chris is a guy I have met a few times, he is top only, well hung, not a good repeater but quite a long stayer. He does ... Read full Story
shemale lover 2012-11-27 3,498 Group Sex sucking rimming
0%
Tara's Adventures
Part 1 I had met them on line. Marla 1st then her owner Mistress Olivia. We chatted for well over a year and had met for drinks. They knew of my submissive fem side and we had planned meetings on several occasions but things always developed that upset them. Then a period of time developed whe... Read full Story
shemale lover 2012-08-11 5,231 anal Group Sex oral domination sissy
80%
Office Policy
“Ok ladies and gentleman, please put your hands together for the beautiful and talented Erika!” the DJ’s voice rang out over the thumping alternative beat as the object of my lust strutted to the stage. Erika’s saucy red curls bounced on her head and on her soft porcelain whi... Read full Story
shemale lover 2012-08-30 8,440 anal ass sucking threesome tits fingering sex blondie
100%
Jenny, Melissa and Me
I’m watching you on the screen, Jenny, as you pull down your pretty nylon panties with the floral prints and spread your legs. Your brunette hair hangs down around your lovely eighteen year old face, smiling as your labia open wide and you begin to rub your clitoris, all the while smiling, and... Read full Story
shemale lover 2012-10-28 2,519 anal Group Sex Fetish oral
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 10,945 Group Sex Big Tits Bareback Creampie Blowjob blonde Asian Ladyboy Shemale and Girl Guy Fucks Shemale Ass to Mouth cum in mouth double anal
100%
The best of two Worlds Part 4
After our adventure on the beach Jacqui had a moral and physical hangover for a few days. She would do things to me that went beyond my expectation. She was absolutely fascinated with my cock, giving me head jobs the moment I walked in to the door. Upon my arrival home I would find her half naked, h... Read full Story
shemale lover 2012-04-26 2,601 anal sex Group Sex Blowjob orgasm