Joke: There are 10 cats sitting in a tree. When one falls off, how many are left sitting in the tree?

Joke: A man and his wife go to an art gallery and they come to a piece entitled 'Summer.' It is a painting of a naked woman with leaves covering her. The man's wife asks him "What do you think?"

He replies "I wish it was called Autumn."

Joke: How did mathematics begin?

Joke: What's Batman's favorite element?

Joke: What did Jon do when his dog ate his science book?

Joke: Knock knock!
Who's there?
OCD!
OCD who?
OCD who? OCD who? OCD who? OCD who? OCD who?