Similar to ROFL, 'niggaz be rollin!' is a phrase is used to describe something so hilarious, it had people rolling on the floor.
Person 1: Yo man, you seen that dude doing the dick slang on the freeway yesterday?
Person 2: I know man, shit was so funny, niggaz be rollin!
Person 2: I know man, shit was so funny, niggaz be rollin!
by RoboPchan February 24, 2011