down to bust
When someone needs somethin done, and the saying is used to ask whos willing to participate.
"Lets fuck her up! I need people to help me! Which one u guys is down to bust?"
broke-down, busted, and disgusted
When you have managed to sink to new lows, and can barely stand to look at your self in the mirror anymore, you, my friend, are broke-down, busted and disgusted. When you have reached that level, you know that you are truly pathetic. You are past pitiable. People cover their eyes nose, and ears when you walk by. There is no hope for you.
Derek had not bathed in two weeks, he had not moved from his bedroom in two months, and his friends had not talked to him in two years. The brother was broke-down, busted, and disgusted.