by mincinator February 28, 2011

by M-Jizzle July 26, 2006

by Beardman!!! July 4, 2010

when you think someone or something is stupid, you chin rub.
normally you look at them like they are stupid and rub your chin hinting that what they just said is dumb. but when you cannot see the person or do not feel like rubbing ur chin like you have a beard you say chin rub so people know thay wat they said was amazingly stupid and idiotic.
normally you look at them like they are stupid and rub your chin hinting that what they just said is dumb. but when you cannot see the person or do not feel like rubbing ur chin like you have a beard you say chin rub so people know thay wat they said was amazingly stupid and idiotic.
Sean: theres nothing to do
Mike: i knoww man....lets go to the park or something.
Cindy: wow mike, chin rub its raining u dumbshit.
Mike: i knoww man....lets go to the park or something.
Cindy: wow mike, chin rub its raining u dumbshit.
by melliissaaaa May 20, 2008

by Pat Rorke October 20, 2008

Sin Chin: The abrasion a woman is left with after making out with some guy who didn't have the decency to shave his stubble therefore leaving her looking busted with a red-ass chin the next day.
me: "Yo, who you with last night!?"
skank: "Who? What?"
me: "You got sin chin bizzatch...tell that douche bag to shave next time!"
skank: "Who? What?"
me: "You got sin chin bizzatch...tell that douche bag to shave next time!"
by Ho's R People 2 December 9, 2008
