Top Definition
stands for "rather be blazing"
Hey. You want to rbb 5th?

Sure. As long as we got time to get my 30.
by rbb December 11, 2006
Really brap boiz.

A term widely used in high schools in the UK. RBB is a team of manz who aim to help the local community by planting flowers, picking up litter & helping old people across the road.
Hey ma'am, i'm in the RBB and i'm gonna help you across this road!
by XDLucas December 20, 2008

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