I've heard this referenced on the tracks but can't find the original for the life of me. Kurupt says it on this Pete Rock Joint-http://www.youtube.com/watch?v=Juv-BZgqoRk
This diamond d joint-http://www.youtube.com/results?search_query=diamond+d+bad+good&aq=0&oq=diamond+d+bad

and it used to be on this battle record i had back in the day. It's probably something obvious and I'll be embarrassed but when I google the lyric all I can find is the above results. If anyone knows where this is originally from I would love if you would show of your vast hip hop knowledge with me! Thanks Fams