The strokes came hard, fast, and disgustingly smelly.  You could feel the beef of his Krogan-ese cock grinding up and against your asscheeks, and you knew immediately what his intent was.  Grocery shopping at midnight was a bad idea now, wasn't it?  Grunt steamed profusely while he roughly abused your petite, small rump in comparison to his massively hyper-sized dong!  The Krogan gritted his teeth as his nearly forty-foot frame rocked back and forth, spilling smegma galore on the inside of your tight, yet foul derriere.  One two-foot-thick dick, four swollen balls and a severe aversion to hygiene.  You cursed under your breath as the large, brown alien creature stood under the light of a dim street lamp casting only a sliver of butthole-saving light through the alley way you were going to use to get home a little quicker.  Just your luck that the city was full of horny guys like this massive hunk...  You struggled not to puke from the stench of his musky foreskin and dared not think about the last time he washed that cock of his!  Fifteen seconds passed by now; from when you entered the alley, to where he jumped out and ambushed your dense ass, pinned you against the brick wall, and started breaking your butt wide open.  (Think about a piece of PVC piping getting jammed into your butthole, then widening to the girth of a girder in a half-second.)  Only the first thrust seemed to hurt, though; at least with ass-breaking pain; the next few stung, but you couldn't really overpower the guy!  The grunting of the alien's effort and the slapping sound his double-nutsack made on your asshole when he shoved that overladen-with-smegma cock inside your buttcheeks... you weren't a stranger to having someone invade your anus, but with perishables on the floor, you didn't wanna stick around TOO long!  His thrusting continued up into your asshole; and you could see that he was getting tired of this position - he pulled out and told you to back up as your butthole gaped and tears started to stream out of your eyes.  He only needed one arm to pick you up, but he used both of them instead!  You retched internally and struggled not to puke, as the resulting stench from under his armpits was enough to make birds faint a mile or so downwind!  He angled backwards on those huge footpaws of his and lowered you facing away from him back onto his massively disgusting shaft.  It was all just happening without your consent; but the brown alien beast didn't care about that.  That, and a glimpse at his cock told you that all that buttfuckin' didn't do anything to clean that smegma-laden cock of his off!  His foreskin kept pulling back and forth; doing absolutely nothing to keep his seemingly-infinite smegma production down.

He grabbed onto your asscheeks after hilting into them and slowly started to let gravity do most of the work.  Instinctively, you dropped your legs, but you couldn't close them with the gutbulge his dick made inside your body!  You could feel organs sloshing here and there... and your own arousal, too.  In the primal part of your mind, you wanted to get off to this; you'd seen some things online about rape, but you'd never thought you'd experience it for yourself!  The Krogan was brutal with his grip, too; making the blood in your ass pool and making it blush as if you were getting one hell of a spanking.  His abdominal muscles felt weird on the small of your back, making you wonder where he got all of his stamina from!  And the stench seemed to be getting worse and worse as he worked up a slow, yet powerful orgasm between his legs.  At least, what felt like an orgasm...?  Rhythmic *schlock* sounds erupted from your butt as he started to pull you completely off his dick; gaping wide and then pulling you back down again.  

As he pulled you off of his massive dick, you could feel a heavy sludge pouring out of it before his beefy, disgusting cock rammed back into your rear again.  It was quickly becoming obvious - his dick was not only mega-thick, but also mega-cheesy, too!    The Krogan grunted a couple times as thick clods of dick cheese welled up from behind his foreskin with every thrust planted inside your thick rump!  You didn't have the energy to cry out to anybody; and it was probably close to one in the morning by now; there wouldn't be anybody around to cry out to anyway.  You dug in your heels (metaphorically) and let the alien beast have his way with your butt for a while longer.  He just kept forcing more gross smegma inside your ass; making it slippery and smelly!  You were gonna have to take one hell of an enema after this if you ever wanted to scrape the smell out of there (at least the gross smell of the filthy Krogan, anyway)!  He apparently tired of that position too, but he had a different method that he wanted you to take.

"Grunt wants you to sniff his nuts and tell him what they smell like.~"

You winced to yourself.  He'd just got done with a rather rough fuck, and even now he wanted MORE pleasure?  Let alone the stench you'd have to endure against his crotch...  His dick dripped heavily with the off-white substance that seemingly came out of nowhere from under his mass of foreskin; plopping on the ground with some rather filthy-sounding noises accompanying it as well.   It seemed like it was growing, becoming thicker and goopier with time!  The girth continued to grow from two feet to three as you spun around and took a peek at the cock that'd been ramming your ass for the past few minutes. You noticed that there was a literal shell of smegma that welled up from underneath his foreskin.  It seemed to ooze with much of the white, gooey oatmeal-like Krogan cheese that you felt dripping out of your bunghole on top of adding to its girth!  Understanding a bit more about their anatomy now; you were a little less reserved about the whole thing.  It didn't change the fact that the substance still stank to high heaven, and it didn't change the fact that Grunt wanted you to sniff his nuts and tell him what they smelled like.  He grabbed your head and roughly shoved it against the separating space between his testicles - they smelled like raw fish that'd been left out in the sun WAY too long.  Not a pleasant smell by any stretch of the imagination, but something in your brain tweaked you about the whole scenario.
  
Grunt dug his toes into the ground of the alley while you kept sniffing at his balls; his smegma drizzling down the length of your back and pooling in your stripped pants below.  The Krogan chuckled gently to himself as he extended a single finger and pushed your head backwards to his taint; enjoying the feeling of overpowering you.  His dick continued to cheese it up; gaining another foot in girth while he grinded his taint against you next!

"Eat it, slut."

You immediately dig up against the foulest part of his body; spreading his legs a little ways as you dig your teeth into the fleshy bits between.  He even lets you nibble on his rear nutsack as well during the whole thing!  Grunt moaned to himself as he idly rubbed his meaty, stinky shaft; sweating profusely enough to fill your mouth with the stuff while you nosed and teased the big guy's naughties.  He was getting bored with having you just nibble, though - he wanted to feed you!  At this point, his girthy cock had grown at least another foot, if not two!  The alien beefcake stood you back up again and roughly shoved his cock down your throat; immediately you had your gag reflex trigger from it!  Fortunately you hadn't eaten dinner yet; so there wasn't anything that came back up.  Grunt chuckled at you while his massive hyper-dong started to piston in and out of it; stimulating his smeg-skin and causing the smelly, disgusting stuff to start filling your tummy.  It came slowly at first, but once he got worked back up in the the same rhythm that he had before with your ass, it started to gush out instead!  Was this how Krogans orgasmed; you wondered?  Either way, the taste was so foul, you wondered how; if ever you'd be able to get the stench out of your mouth.  Smegma went everywhere, digging between teeth and ingraining itself in the lining of your esophagus.  And the girth just kept getting wider and wider!

You could feel the Krogan crooning as he watched your stomach start to bulge from the amount of smegma he was shoving down into your gullet; and you didn't have much choice but to swallow it all!  There was the risk of suffocating if you didn't; as he started timing his thrusts to match when you swallowed a full mouthful of the stuff.  

The taste was dulling after a while; the stench still made you want to puke but it was getting more and more tolerable as time went onward.  You dug in your heels and decided to give the Krogan the best rape he'd ever experienced!  Grunt dug his dick down into your swelling gut; and suddenly you passed gas!  Not wittingly, no; but it still came out.  He was making so much smegma that it had started to fill out your bowels, forcing you to your knees under the massive Krogan's dong.  He suddenly pulled back out again and rested his massive cock on your head; continuing to ooze that smeg-skin on his dick overhead.  The Krogan rubbed his dong; now at least eight feet in diameter around and seemingly longer than ever before while it dripped like a pizza fresh out of the oven.

"Eat that shit up, slut.  Right off the alleyway ground!  I won't have you wasting ANY of it."

You dreaded the moment that he spoke those words.  Let alone the fact that there was a mass of about twenty pounds of the stuff to eat, but off the ground?  In an ALLEYWAY?  All of this was already extremely unhygienic as it was, but one misstep could wind you up with a broken neck; or worse!  He crossed his arms and looked down at you while his dick dripped heavily with more of the same, waiting for you to put your mouth into the pile of smegma.  Eventually, you worked up the courage to do it, slowly lapping at the spreading pile of dick cheese!  All of a sudden, his foot came up, then down on top of the back of your greasy head; spreading your hair around and getting it all mussed up (on top of the smegma there making it messy anyway!)  

He grinned a bit and ground your nose into the stuff, trying to make you as low to the ground as possible.  The Krogan's dick twitched, making him moan as he angled it upwards and stroked it a few times in the meanwhile, suddenly splattering the wall and the entirety of your back in more smegma!  You wondered where it was all coming from, and his ballsacks swaying in the wind didn't help matters.  His dick stayed rock hard even after the purge!  You'd cleaned up most of the pile by then, and Grunt figured that was enough for now - he wanted more buttsex at that point, and picked you up off the ground again.  He took to sitting against a dumpster and faced you away from his cock, then speared your rear end right down over top of it! 

The off-white sludge that filled your guts still didn't seem to stop anytime soon, and his hyper-sized dick wasn't making matters easier, either.  The fucking noises got wetter, his grip got tighter, and your butt got to its loosest that it'd ever been yet tonight!  Grunt did a lot of grunting as his true orgasm started to build up, and the head of his dick flared out; making you truly feel what it was like to be a Krogan's mate.  Or at least their slut, anyway; in this case.  Grunt held onto your stomach and hips as he milked his dick on your asshole, depositing chunky loaf after chunky, mushy loaf of smeg deep inside your guts.   Your belly was full of at least five hundred pounds of the Krogan's unwashable dick cheese, and more of the stuff kept pouring in.  With his powerful rod backing up your bowels, and the stench firmly implanted in your nose; there wasn't much resistance to it starting to come back up naturally the opposite way!  The thick substance rushed out of your mouth and onto the Krogan's toes and kept spewing for a while until your gut looked somewhat more deflated than before.  Grunt didn't seem to mind; in fact, he just re-deposited some more up your asshole!  Another surge gripped him like before, though; and his cheese-emitting cock bloated your guts back up to what they once were, and then some!  

You felt dizzy; all this bouncing on Grunt's cock had made you quite nauseous by now!  In between thrusts, you had to swallow some more of the gunk rushing upwards, struggling to keep it down.  The massive mega-Krogan did that for a few more minutes before he decided he wanted to see you let it go out the back way - so he pulled you off his dick, set you on the cold stone ground again and roughly shoved his dick back into your mouth!  He forced you to gobble up his cock once more, and the pressure behind was a lot stronger than the pressure in front.  You whined as a fat log of pure smeg spewed out of your backside, coiling up for a few seconds as the Krogan turned his production up to eleven; forcing it all directly through your bowels amidst his rough thrusts that made you feel absolutely and positively used!  The stuff splattered the wall with how much he was forcing through your bowels, and his thrusting was becoming more erratic and grating the longer he spent inside of your mouth.  You tried to catch some and smear it on his nutsack, but he still had a free hand - two of them!  He swatted your hand away and immediately grabbed onto your head; putting a lot of pressure on it and making you think of nothing but eating his cock.  His little smeg-bumps kept knocking against your teeth, gritting them up over and over again with the foul-smelling substance; and the gunk kept pouring out of your bowels into your now-ruined pants.

What took place over the next hour or so felt like an eternity as the Krogan kept trying to find the best position to break your body on his dick.  His smegma hadn't stopped leaking, but something much sweeter had started to as he'd transitioned to sitting against the dumpster; making your balloon of a gut rumble and purge every now and again down over your genetalia.  You wondered why the Krogan took so long to get off, but at this point it didn't matter with your body being defiled by so much cheese you could probably make a cheese wheel out of it all!  The Krogan roared suddenly and rammed his massive dick as deep as he could and deposited a load of cum that steamed and stank rather heavily indeed!  Your eyes rolled up into your head as he abused your head a few more times, thrusting viciously in your throat before pulling you off roughly and pushing you off of him to the ground.  You finally caught a few gasps of the stale air near the ground and looked up to his feet looming above, stepping on your face and cleaning some of the cheesy, disgusting mix on it.  He rolled you over and used your stomach as a door mat, scraping some more of it off and getting them as clean as he could.

"You took that pretty well, slut.  I wouldn't mind using your face again sometime."

Grunt smirked in the dark, midnight air and turned to leave, but he grabbed you by the hair and roughly dragged you along with him back to his ship.  Apparently you and your seven-hundred-fifty pound gut weren't going to make dinner tonight, as he didn't care about your groceries at all.  The Krogan bobbled his shaft as he took you along back to his ship, parked in a nearby parking lot.  Everything in your soul told you to scream, get away, call for help; something!  But you bit your lip.  You LIKED his dick in you.  It's not like any other man would pleasure you the same way again after being basically refitted for Grunt's massive member.  As he dragged you inside and locked the door, you popped a squat and pushed out a good bit of his smeg from your bowels again as you started to get used to being his 'pet' - one such pet that would enjoy the smell of dick cheese for many a year to come.  Grunt hopped into the cockpit of his ship and dragged you along, ordering you to clean the rest of his feet, talon by talon on the way to your new 'home.'