Jump the Grenade 

The act of hooking up with the Fat and or Ugly Girl who is going to tell her hot friend she can't hook up with your buddy. You know, that one nasty chick who is all bitchy right up to the time she realizes she is actually gonna get laid, then she is suddenly cool.

"Buddy, will you jump the grenade and start giving that nasty chick some attention before she claims she has to go home?" "Yeah but if I have to stick in her butt again I'm gonna be pissed"!!!

Jump the Grenade by kinghog August 8, 2008

jump on the grenade 

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.

jump on the grenade by spitfire May 9, 2004

Jump on the grenade 

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.

Jump on the grenade by RC Collens November 14, 2003

jump on the grenade 

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

jump on the grenade by biggle January 31, 2003

Jump On The Grenade 

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 .

Jump On The Grenade by LadyKiller227 August 25, 2009