11 jokes

4, 6, 8, and 9 have all been killed. 2, 3, 5, 7, and 11 are the prime suspects.

A mathematician stumbles home drunk at 3 a.m., and his wife is livid. "You swore that you'd be home by 11:45!"

"No," slurs the mathematician, "I said I'd be home by a quarter of 12."

What was the last thing going through the minds of the people who jumped out of the buildings during 9/11?

Their ankles.