Apropos: Monty Python's "Piranha Brothers" sketch, specifically, @ 1:35 of part 2 (but watch it all):

Part 1: http://www.youtube.com/watch?v=64aVHzoSdaI

Part 2: http://www.youtube.com/watch?v=aihjThGabYY

(Or you can just read it:

http://pianosa.com/pic/sketches/piranha.htm )