There were two twins, and they were both very tall.
The next thing they knew, they were on the floor, and there were planes up their asses.
Sorry for this Pick Up Line.
Are you a building? Because I rate you 9/11, so let me put my plane in and let kids fall out.
Why did the caretaker of the Twin Towers get sacked?
He left the landing lights on.
Get pranked, bozo!
My dad was in the plane in 9/11, and he was the smart one that convinced everyone. He said, "We're fucked."
Q: Why is America bad at chess?
A: Because they already lost two towers.