Area inbetween a man's scrotal sack and anus.
Your guche is probably the most sweaty part of the body.
by Kurt91 May 07, 2005
The piece of skin between your asshole and your nuttsack - at first seemingly useless, yet prevents a man from shitting on his own balls.
i've got a sore guche from riding my bicycle all day
by b4st4rd November 21, 2005