Area inbetween a man's scrotal sack and anus.
Your guche is probably the most sweaty part of the body.
by The wise one 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