Disclaimer: I do not own South Park or any of the following characters.
Tweek is probably Kenny's best costumer. He'll take anything he can get his hands on, really, and Kenny feels guilty about enabling him sometimes; like when Tweek comes asking for smack. Kenny always wants to smack Tweek upside the head, but sells him the drugs instead. Twitchy needs his fix, and Kenny's family could use the money. The fridge and cupboards are practically empty—unless you count the endless supply of alcohol and Poptarts—and bills need to be paid. So, Kenny welcomes Tweek into his "humble abode," which is usually hectic, but currently otherwise unoccupied. "Sit anywhere," Kenny says, motioning to the ratty furniture, because Tweek's just standing in the middle of the living room, shaking like a vibrator. "Are you here for your usual?" The arm of Kenny's couch is splitting open, and Tweek preoccupies himself with wordlessly picking at the stuffing. Kenny sighs, recognizing Tweek's stalling method. "You don't have the money, do you?" Tweek just shakes his head. "Dude, I told you, I can't keep lending to you. You still owe me, like, eighty dollars."
"Gah!" Tweek runs his hands through his hair, gripping a handful and practically yanking it out.
"Stop that."
"Please, Kenny, I'll pay you back by the end of the week... With interest!"
"Seriously, Tweek, I can't—"
He makes a pathetic display of dropping to his knees and gripping Kenny's pant leg. "I'll do anything, man! I'll suck your dick; anything!"
"Dude—"
"Let me suck your dick! I won't tell anyone! I'll pay you back! Please!" Kenny bites his lip, contemplating Tweek's offer. Even if it's only the heroin Tweek wants, and not actually Kenny's dick, the begging still to Tweek's advantage. "Fine." Kenny sighs, predictably giving in. "As long as you pay me back by the weekend."
"Thank you!"
"You can thank me by sucking my dick," he reminds Tweek with a smirk, gesturing to his crotch, which Tweek is eye level with.
"Oh..." Tweek audibly gulps. "Right." Now, that it's time to put his words into action, he seems less eager to do it.
"Well?" Kenny raises an eyebrow at the hesitant boy. "What're you waiting for?" He swivels his hips a bit; Tweek's eyes following his slight bulge. With a shaky breath and shaky hands, Tweek nervously unzips Kenny's fly, shooting the latter one last glance, before returning his attention to the erect penis that's suddenly in his face; taking it into his mouth. Kenny tips his head back, grabbing onto Tweek's crazy hair; long enough for Kenny to almost trick himself into thinking he's with a girl. Tweek has better skills than any chick whose mouth has been on Kenny's dick, though, and has Kenny already cumming within the matter of a couple minutes. "Holy shit," Kenny says, zipping up his pants without bothering to clean up the mess. "That was some blowjob." He chuckles, finally presenting Tweek with the glassine envelope of white powder he already had prepared. "See you this weekend, right?"
"Right." Tweek accepts the envelope and abruptly leaves out Kenny's back door. He passes the meth lab in the backyard, crosses the train tracks, and makes his way back to Tweak Bros. with eyes shifting suspiciously in every direction.