Have just found this web. Sounds like fun.

Try this one. How is that the two words "helicopter" and "ornithopter" apparently both use a derivation from the Greek "pter" (wing - cf pterodactyl - roughly "wing finger"), yet we abbreviate "helico-pter" to "copter"?

Going back a while in the thread to the "Whole Nine Yards", a fanciful derivation could be from the German, meaning "after all the debating and voting is over" (No/Yes - Nein/Ja's).