Answer:
What is it that no man ever saw, which never was, but always will be?
Other terms for this handy device include doohicky, doo-dad, and whatchyamacallit.
What is an acceptable act of violence during saint Patrick's day?
Where can you add 2 to 11 and get 1?
What gets bigger the more you take away from it?
It is something you will never see again.