The Lecture That Has Never Happened by Jim Abrahams Page 10 et seq.
Personal Comment: Usually mixing plots creates a horrible creature. But this is a crowd pleaser. Not easy to do as it involves a lot of palming, but I think the timing for those is just right to get away with it for real people. I tried it many times and it was good. In case you have not noticed. CTP stands for Cannibals To Pockets.