Booby Doo is a name used to describe people with Moobs, or Man Tits. Booby, reffering to the boobs on the man. And Doo added on the end because of Scooby Doo.
Some men have moobs, which is the male version of boobs
Male + Boobs = Moobs
People who have moobs, should be called Booby Doo. So whenever you see them call them Booby Doo and not by their real name.
Oi Booby Doo! look at your man tits!
Piss off Booby Doo!
An expression said by a man when he wants to make it a point that he likes big girls. When a girl has booty-doo, her stomach sticks out more than her booty do.
Man 1: Damn! That bizatch has got some booty-doo!
Man 2: Yes, I concur. Her stomach does stick out more than her ass.