Stands for "dirty booty girl" or "dirty booty guy". The act of walking out in public looking like your ass smells. Sometimes, the person in question actually does smell like the inner most crevis of an ass, then which they graduate into a D.B.B., "Dirty Booty Bitch".
Did you see that floozie in line @ King Taco, STRAIGHT D.B.G.
"Don't Be Gay"
When guys are having a good ol' time, and they get a little closer than the other person wants, just say "DBG"
Many of the persons actions may be caused from happiness that the other did for them.
"Woah!, there buddy, that's a little too close there, man!!" said Scott, as Chris hugged him.
Scott then yells, " D.B.G." as cry for help or a sign that the other person is being a little too gay for comfort.