What's black and found on top of the stairs?
Stephen Hawking during a house fire.
Why is the Leaning Tower of Pisa leaning? Because it has faster reflexes than the Twin Towers.
Chuck Norris sneezed and sent 2 planes flying... on September 11, 2001.
9/11 jokes just don't fly around me.
You know some of these jokes took me 9 minutes and 11 seconds to realize. When I did, it hit me like a plane.
We were making jokes before the second tower even fell!
Why were the Twin Towers so mad?
They ordered pepperoni, but they got plain.
Someone ordered pizza on a tower... A plane came.
What do you call a Titan who can't swim?
Titanic!
Imagine the Titanic with a lisp. It would be unthinkable. My version is imagine the Titanic with a lisp, it would be unsinkable.
What did the front half of the Titanic say to the other half when it hit the iceberg? I'm breaking up with you.