Ok... just to set the record straight here, I am not, nor have I ever been a crack addict.  :)  There's a joke around the music department that if you are a music major, you're on a special kind of crack.  People who are music majors are INSANE in every sense of the word... and they allow fellow non-music major friends to their crack lockers... If you get it, great... if you don't... just smile and nod. :)