Slang for "be right back"
White guy: Where are you going?
Black guy: Nowhere I'll brb
A quick and easy way to say 'Be right back'!
Me: BRB
A friend: OK, see you soon!
Being really bi (as the short word for bisexual)
A bisexual person is someone who is sexually attracted by 2 genders.
"He is brb he likes a boy now ..."