Interesting that GUEST at 20 Oct 09 - 09:55 AM says that Thomas Crapper invented the flush toilet, when the very web site he refers us to says that Thomas Crapper did NOT invent the flush toilet.

Furthermore, I agree that "phone booth" is much funnier than "crapper" because of the surprise factor: the audience is led to expect "crapper" and then hears "phone booth"! Given the right delivery, this could be hilarious.

Some people seem to have no appreciation of the humor that is often behind the use of euphemism.