A sport in which one yells "ULTIMATE GRAB-ASS," at which point everyone in the room (or immediate area) starts to grab someone else's ass, while protecting your own ass at the same time. Sometimes it is paired with "The Floor is Lava" for extra epicness.
Dude, remember playing Ultimate Grab-Ass last night?

Oh yeah, man. I rocked that game. My ass didn't get grabbed once.
by ezuck August 23, 2011
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Jessica: why did you grab my ass?
Noah: it’s grab ass december!
by December 2, 2020
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Once a month on a Monday. You choose. It’s on a Monday because it helps you get through all the shit Mondays throw at you.
by Ctinez October 6, 2018
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Gorilla Grab-ass: another name for American Football, NFL.
It's Sunday, me and Mike are gonna go watch some Gorilla Grab-ass tonight.
Hey did you see that game of Gorilla Grab-ass last night? I think Texas is going all the way this year!
by PhantomTechnician February 5, 2020
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Slap ass month is back but we r going to change it up a bit instead of slapping grabbing ass is instead so be prepared cause it could just happen to u.
Screenshot and post on ur in story tagging t1.stxckz

Grab ass month is when boys grab girls ass or girls grab a boys ass
by Add my Instagram t1.stxckz November 3, 2019
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