Top Definition
We all are aware of the fat chick known as the grenade among many of her hot friends, and if no one hooks up with that girl none of us guys are going to score. So the grenade jumper is the unfortunate yet honorable member of a crew who risks his own health and self-respect in order to allow his friends to score buy "jumping" on the grenade.
We can take these girls home right now. Who's going to be the grenade jumper and take one for the team?
by Capt Stevo January 22, 2007
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