1 definition by Brad Kronik

one who seems to fuck things up everywhere he goes
After three girls enter your dorm room and begin talking to you, this is what happens after fuckn knuckles enters your room:

Girls: hey(to fuck knuckles). do you live here too?
Fuck Knuckles: (does the double arm pump and screams in a loud gay voice, like a white guy trying to be lil john) YEAAAAAH!
Girls: (they promptly leave after giving a look of disgust to fuck knuckles)
Two guys who live in the dorm room: hey fuck knuckles, thanks a lot. (the guys begin to bumrush fuck knuckles and beat the shit outta him for being such a douche)
by Brad Kronik January 1, 2006
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