best jokes that rely on them to fail
What is your favorite joke to tell where the real punch is after the first one fails? Mine is:
A horse walks into a bar. The bartender says, "You come in here a lot, I think you may be an alcoholic." To which the horse responds, "No, I don't think I am", and suddenly disappears.
It's a joke about Descartes famous philosophy I think therefore I am, but if I explained that first i would be putting Descartes before the horse.