The act of recieving oral sex while deficating (taking a dump) and smoking crack. An evolution of the Blumpkin.
woman 1: I have no idea what to get my husband for his birthday. Any ideas?
woman 2: Why don't you give him a blumpkin
woman 1: No, no, that will never do. I gave him one of those last year.
woman 3: Well then, how about a Crumpkin?
woman 1: Perfect! Now I just need to get some crack...