A girl many guys have on their phone who they turn to if they can't get any sexual favors from a respectable woman. A bust down is usually a runner
and she is usually the one most guys have to turn to if they cant get play
the night they need it. When you get with a bust down you later will show signs of guilt and denial the day after, the more you get on a bust down the more your self-esteem will erode. There is even a "10 bust down commandments" that has been established and is necessary to abide by if you want to keep your dignity.
Hey man I tried callin that hot chick to roll with me to the party but she actually has sexy shit to do. Can i just roll with the local bust down to the party?