Call girls: adapted from the use of "extra" in the film industry. Gay rappers will often need to hire a crowd of "extras" so that they look cool when they go partying because the rappers are too ugly and suck too much to attract hot groupie bitches.
the girls think I'm extra pretty
How I know? I ain't got no extra wit me, oh
-MASE, "Breathe, Stretch, Shake"