Top Definition
To do excessive excercise, and then put your hands down your boxers to get them sweaty! then proceed to slap another human or animal. The sweatier the gouche hand is the better the outcome. Can also be used in a sexual manner.
O no tyrone just G-Slapped harnish

Damn id like to give her a dripping gouche slap
by Meesh2001 October 03, 2007
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