One of my college biology professors, while discussing the various orders of insects, was on the subject of lice. Apparently he was trying to recall which ones were included in the department's insect collection. Immediately after mentioning the pubic louse, he scratched his head, looked down at his belt buckle and said "I'm sure I've got some of them around here. I'll have to see if I can dig them up."The class broke up, roaring with laughter.