A term used to stop someone from speaking complete gibberish.
AuburnFan: Auburn is going to kick Georgias ass
UGAfan: Boy stop! Auburn sucks.
used to stop someone speaking when you don't agree if someone is talking BS.
Often used in songs that are edited for parental advisory usually to cover the word MTF.
Boy stop could also be interpreted as being the same as talk to the hand cause the face ain't listening
bad motha- (boy stop)