I just managed to slip onto a train just as the doors were closing,and work myself into a corner not far. Already,the carraige was warm and stuffy and full,but not as constricted with passengers as i had thought,although all seemed to be men of fairly young ages,teens,twenties,thirties,but i just shrugged it off as being coincidental. Unfortunately,i was'nt feeling particularly well and i had been feeling unusually tired. I had an odd feeling in myself since the previous unsettled nights sleep..Odd in the fact that every time i caught sight of a buffed muscular young man,i kept on springing a boner in my pants with the slightest daydream or glimpsing fantasy, and i could feel myself dribbling pre-cum into my briefs,which made me feel all the more on edge. The train set off on its journey and i stumbled a little,gently bumping a handsome young office worker attempting to read his financial paper in the crowded carraige.."Sorry" i said,smiling weakly at him, and instantly springing another fucking boner!.He just raised an eyebrow at me and continued reading as i stole furtive glances at hints of a firm athletic physique beneath his black suit jacket and tight black suit pants that hugged a cute pert butt.His short hair was jet black and gelled into short spikes,and from what i could catch from the side,he had ice blue eyes and full lips...full kissable lips.. I shuddered as i felt my cock milk pre-cum into my moistened briefs,then tore my eyes away from him before he noticed. The train swayed again..and i glanced out the window at the darkness of the subway tunnel for a short moment. Then the headphones worn by a youth of around 16 or 17 standing beside me,rattled out what sounded like a Rap tune. I glanced at the youth. Cute. Blue eyes,snub nose,faint peach fuzz on his chin.Wearing dress code typical of modern British youth. Hooded grey jacket over a Burberry cap,white loose tee shirt,baggy black trackie pants and big white trainers. He caught me looking at him and curled his lip in a look of disgust,whispering 'batty-man'..an urban teenagers word for faggot..under his breath.

The train stopped at the next station. A few passengers got off,several got on,including a trio of noisy school boys,perhaps around 12 or 13. All three were short,probably no taller than 5ft and likely awiting puberty still to set in. One kid,a pale boy with ginger hair and freckles and dressed in as expected, a blazer that was obviously too big for him..and hefting a sports bag in front of him, gaggled loudly about his classes football game.I just peered out of the window again as the train doors slid closed and the train set off again.

A few minutes passed when the train carraige jolted and this time,making the teenaged boy stumble hard against me as the light flickered briefly. The boy did'nt apologise like i had to the office guy.He just straightened up and glared at me with a menace that made me feel uncomfortable,even though i was in my thirties and twice as old as him. Our eyes met for a moment,before i yielded and glanced at first,absently to his chest.I had to tear my look away as i was stunned to notice his chest was firm with slender pectoral muscles lightly outlined by the tight fabric. I have a fetish about muscles,and big pecs in particular.

My cock twitched into a stiff erection and i leaked pre-cum again. I could feel the youths eyes still bearing into me..and with the next sway of the train, he moved closer to me,about a foot away,as another passenger moved behind him to alight at the next station. I fought desperately not to meet his gaze but gave in. He stared into me and sneered again. I felt my mouth run dry and my heart pound in my chest as i glanced down at his torso..At the sight of his pectoral muscles seemingly thicker than before, and pulling the thin fabric tighter over them,accentuating the shapely curves even more. Thankfully,the boy was diverted by the train swaying and then pulling to a halt deep in the tunnel. But my eyes were fixated on his pecs. They were definately getting thicker and meatier,swelling perceptively under his tee,into deeply curved mounds.' How the fuck was this happening?' i thought.. The boy reached up a hand to adjust his left earphone and with astonishment,i watched as a sizeable bicep bunch and strain at his long sleeves,and the same action of raising his arm,pushed his growing pecs further out into heavier mounds of muscle,the nipples becoming clearly defined and poking out under the tightening tee. I was too slow to look away when the youth glanced at me. "You a fucking faggot?" he snapped loud enough for the office guy,the fit looking guy behind him, and the schoolboys to hear him. I went red with embarrassment. I put up my hands as if to feign innocence,and glanced around. Then i noticed the office stud..Sweet fuck,...was he beefing up too?He looked at me for a moment and returned to reading his newspaper.With his arm raised up holding the paper, i could clearly see a thick bulge of his bicep,even beneath his suit jackets sleeve.Like the boys pecs and biceps,his arm began to thicken and expand beneath the suit,and his shoulders beefed up and swelled. There was a snapping sound and i realised it was a button breaking off his blue shirt as his own pecs began to rise up and thicken like mounds to strain the filling shirt.

I was in a state of disbelief at the sight of the youth, and now the office stud,growing ever more muscular by the second. I heard a grunt from someone behind the stud, and the sound of fabric stretching itself apart. The train jolted momentarily and i was drawn back to the youth..and his growing muscles,particularly a bulging chest that took up most of the space before me. The thick mounds heaved and pushed out further stretching the tee like a second skin over his mighty chest.I was sure at any moment that the fabric would rip apart as it strained for dear life,but incredibly it held, and really gave off the size of his pecs to shocking value,growing past the size of a pro bodybuilders!. The youth glared menacingly at me, and then smiled sinisterly.He raised his arms up to pull the hood off of his capped head, and i caught sight of the fat boulders of his biceps bulging obscenely in his overstuffed sleeves. What he did next,nearly made me come in my pants. He pushed his huge swollen pecs,apparently slowing down their expansion,against me, and pinned me into the corner. From out of view,i could hear one of the boys moaning as if he was in pain,followed by the sound of fabric seams ripping. Then.."Fuck,i'm growing" from one of the other boys..Not a tone of alarm,but more of delight..and i heard him swearing and yelling in glee. More grunts and groans and swear words rose from other passengers.Others were growing too. 'This is way too fucking freaky' i thought to myself,feeling a little claustrophobic,pinned in by the youths mountainous pecs.I could feel myself stiffly erect and dribbling pre-cum into my now damp underwear. 'What the fuck was happening?'. "You fucking love this,don't ya..faggot" sneered the youth,whose massive pecs were so swollen,that they pressed against his chin,his neck thickly corded with muscle. The train finally started off on its journey towards my stop. I had to get off.This was too much to comprehend.Yet a little part of me wanted to stay on the train and worship this youths huge muscles. As the train approached the station,the intercom from the driver crackled into life over the grunts and groans and obvious pleasures of this carraige full of muscle men. "Good evening..this train will terminate at ..." he broke off the announcement for a few seconds.

"Fuck i'm huge..,sorry guys..i'm gonna have to terminate the train at the next stop..i'm too fucking big for the cab.." 'Shit!' i said under my breath..'Was the whole god damn train affected?' A few minutes later,attempting not to orgasm,i forced my way round the youths huge sexy pecs and towards the doors as they slid open at arrival at my stop..

There,my fears...or desires,were answered.Several huge,insanely muscular men got off from other carraiges.Their clothes,although.pitifully stretched to within an inch of life,and some torn at the seams in places..held in the huge bloated muscles..and then i saw huge obscene crotch bulges straining to keep in freaky sized cocks and balls, on each and everyone of the guys.. And the growth had'nt just affected the train.. Huge musclemen and boys waited and arrived on the platform for trains..They were everywhere i looked. 'Fuck' Was i in Muscle man Heaven or Muscle man Hell? I needed to get home fast..My cock seriously needed beating off.. •