Where you use your hand, and go up to a unsuspecting guy, and grab their weiner with sych force, that they are forced to the ground.
Friend 1: "Dude look at that hand... It looks familiar. OH MY GOD!!! IT'S THE WEINER GRAB!!!!"

*HAND GRABS WEINER*

Friend 1: "AHH SHIT DUDE!!!"

Friend 2: "What????"

Friend 1: "I'VE BEEN GRABBED!!!!"
by Weiner Grab September 8, 2006
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