Because of people pussying out on national grab ass day it’s gonna be changed to a month. So grab ass all month long it doesn’t matter who, boys and girls ass will be grabbed so go have fun.
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.