Oh, and as much as I enjoy razzing my dad, I have to agree with him on this one. If there was an expulsion expert in the household, it was actually our mom!
Her father however, did teach us the "pull my finger" game. I'd venture to say that's where she learned it. If I remember correctly, Grandpa Longwind (Chief's dad) wasn't too shy about his bodily functions, either. Chief will have to confirm that one, though, as I was pretty young when he passed away.
P.S. Dad, don't tell Mom I ratted her out!