B.T.U meaning bet that up, you say this when your gonna get revenge on someone or your agreeing to do something together and your lowkey excited about it.
Bro#1: Hood bro im bouta come scoop you we finna hotbox.
Bro#2: Ight B.T.U my guy
Or
Brother: OMG ON GOD WHO ATE MY LEFTOVERS!!!
Sister: I Did
Popular to contrary belief, B-Boy was a phrase invented by the gay community as long ago as the 1960's.
The saying "B-Boy" was slang for "Bottom-Boy" which was a discreat way of indicating someones sexuality (to the homosexual persuasion). Since the 60's this slang term (ironicly) became known as "break-boy" for breakdancing, however, both meanings still exist.
I'm meeting with a new B boy tonight to see if he's right for me