Top definition
1) A nigger like event that happens completely out of the blue ruining an otherwise perfect day.

2) You perform a nigger like event due to being hung over or mentally preoccupied. Resulting in personal harm or property damage.
You ask your lazy black ass friend to help you move something heavy. He trips on his untied boot lace dropping his side of the load crushing your foot. Thats a fucking R.A.B. ( random act of blackness ) Tie your damn boots nigga!
by Bwhitejeeper February 12, 2012
Get the mug
Get a R.A.B. ( random act of blackness ) mug for your buddy Vivek.