Someone who, like a good soldier, will hop on a "grenade" (ugly girl) and take all necessary damage from said decision to ensure a buddy can score with said grenade's much more attractive friend.

SIDE NOTE: Bonus points if you get a BJ and her name is dyke-ish, like Becky or Barbara but goes by Barbie or something much sexier.
JJ: Look at that blonde over there.
Adam: Yeah, but her friend is fugly.
JJ: You owe me man.
Adam: Dammit, I'll be the Grenader.
by Fatz39 January 18, 2012
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Ronnie gets in a fight with Sammie on the hit show Jersey Shore and starts hooking up with Grenades and Land mines
by ForTheThrill August 1, 2010
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A grenade is a cockblocker who is hating on a player. Grenade usually is addressed as being female. A female who is a cockblocker hating on a player. A player hatress
the woman may choose to be a grenade for various reasons. Typically a girl who is unhappy and would destroy chances of her friends getting laid. I have experienced some grenade cockblockers desroy possible chances of getting laid because they couldn't get any play and they wanted everyone else not to also. this type could be a good sport and let everyone else get laid however when and if they are fat and unhealthy they cannot do the right thing by not destroying everyone elses chances. I suggest you find a wingman to cover the grenade. a wingman like a man saving his troop from blowing up may cover the grenade by keeping her distracted while the players can spit their game so they can get what they want from the other women.
by Clinton Ziza Smith May 12, 2006
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1. Weapon of destruction usually a small explosive that was created for war and designed to kill.

2. The ugly girl or girls hanging out with the hot ones.
1. Soldier 1: "Tossing grenade!!!" Call of Duty

2. The Situation: “Pauly D was with the grenade.…When you go into battle, you need to have some friends with you, so that just in case a grenade gets thrown at you, one of your buddies takes it first.” Jersey Shore
by HotDices March 1, 2010
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Sometimes you toss it. Sometimes you jump on it. Sometimes you watch it blow.
by messy messer June 29, 2018
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Refers to sacrificing ones self for a friend by taking up company with the ugly friend. Can usually be captured using an iphone application such as iGrenaded. It refers to a solider jumping on a live grenade to save others.
Your friend meets a hot chick hanging out with her not so attractive friend. In order for your friend to hook up you have to hook up with her friend or jump on the grenade.
by Professional Wingman January 16, 2010
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