1 definition by SquareUp
When you get jumped from behind by a chump who wasn't brave enough (or good) enough to square up to you. So they gotta be a chump and jump you so you have no warning or defense.
CHUMP-JUMP
CHUMP-JUMP
There's no warning or defense when you get chump-jumped from behind, that's what makes them a chump. Next time square up CHUMP if you want a W.
by SquareUp March 7, 2017