Crunk = Crazy + Drunk
(I had to look that one up in my ebonics dictionary).

Just to clear something up about yesterday's posts, the two are unrelated. While riding on the bike path yesterday I saw a naked man walking around in his backyard - gross. In a completely unrelated story, I went to Amy Creed's for dinner and had wine and ice cream, and there was no nakedness or crunkedness during the dinner party.