What is Crusty Knee Brace?
1.A name to call your frined when you are annoyed with them.
2.Another way to say you suck!
Girl 1 - I hate that shirt you are wearing!
Girl 2- Your such a crusty knee brace
Girl 1- What does that mean
Girl 2- um... thanks
See crusty, knee, ugly, bitch, fat, foxhole