Found a listing of some funny one-liners, like these, check out the listing for the rest.
8. Man who lives in glass house should change in basement.
12. Crowded elevator always smell different to midget.
15. Man who scratches ass should not bite fingernails.
19. Condom should be used on every conceivable occasion.
22. Man who go to sleep with itchy butt, wake with smelly fingers.
33. Schoolboy who play with schoolgirl during wrong period, get caught red-handed.
35. Passionate kiss like spiders web – soon lead to undoing of fly.
39. Woman who wear wonder-bra make mountains out of molehills.