A Scientist, Mathematician, and an Idiot are in a car. Crashing into a tree, all three die. They are sent to purgatory, where the Devil is waiting.

(Of course, the idiot was driving)

"Unfortunately, since heaven is quite full at the moment, I am only going to allow one of you in," the Devil says. "Whoever can ask me a question that I cannot answer correctly will be admitted into heaven. The rest will go to hell."

So the scientist steps up and asks him, "What is the most complicated formula known to science?" The Devil snaps his fingers, and a stack of papers appear. The scientist reads them, and has to agree. He is warped to hell.

The mathematician then asks, "What is 0 divided by 0?" The Devil cleverly answers, "There are an infinite amount of solutions, as any number multiplied by 0 is 0." The mathematician has to agree and is also warped to hell.

Finally the Idiot steps up. He asks for a chair. The Devil snaps his fingers, and a chair appears. The Idiot then tells him to drill 7 holes in the seat. The Devil snaps his fingers and there are 7 holes. The Idiot then sits on the chair and lets out a long, drawn out fart.

He asks, "what hole did that fart come out of?"

The Devil examines the chair closely and says, "Third hole from the right."

"Wrong. It came from my asshole."