a.agreeing to distract the skanky friend of the hot babe your buddy is trying to score. NOTE: should you get carried away with your good deed and end up getting on the beast, your pal is forbidden to ever speak of it.
b.a real man's legal duty.
Okay man, I'll talk to the fat one and you can get on with the hot blonde. I'll jump on the grenade for you tonight.
by spitfire May 10, 2004
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to fuck an annoying girl that would otherwise be "cock-blocking" on a friend of yours
This fat fucking bitch was runnin' intereference on my boy, and I had to jump on that nasty ass grenade. Luckily, she sucked a mean dick
by biggle January 31, 2003
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when one willing member of a group of one sex willing seeks out the grenade of a group of the opposite sex in order for the other members of his/her group to gain total access of the other group.
Damn, check out that group of chicks they are hot... well all but that grenade. too bad Blake didnt come out tonight he is always jumping on a grenade
by moaroner December 13, 2005
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While approaching a group of females with your group of friends, sacrificing your night and volunteering to hook up with the ugly one in the group so that your friends can have fun.
Tom I think its your turn to jump on the grenade.
by RC Collens November 15, 2003
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When a group of guys go to mack on a group of girls, the guy who jumps on the grenade is the guy who goes after the fat chick in the group to clear the way for his friends to go after the hot ones. Usually guys take turns
"Man I ain't jumping on the grenade this timn. I did it last time"
by mur11 July 29, 2006
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Hooking-up with the "not-so-good-looking" or fat friend of a hot girl that your bro is trying to score with
I had to Jump on The Grenade just so Joey could get some hot tail last night .
by LadyKiller227 August 25, 2009
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A term used when a wingman takes the ugly girl interested in you, leaving you open to swoop in for her more attractive friend.
Me: Her friend is so hot, but the ugly girl is into me
Wingman: I'll take her off your hands so you can try the hot girl
Me: Thanks for jumping on the grenade, man. I owe you.
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