A bunch of ellipses, a cylinder, and some lines are hanging around together talking:
The ellipses, “Hey, we’re leaves!”
The long cylinder, “And I’m a trunk.”
The lines, “I guess we’re branches.”
They arrange themselves accordingly. Euclid comes along, sits down next to the shapes, and asks what they are.
The shapes respond, “Gee, I’m a tree!”
A little girl loses one of her baby teeth. That night, before bed, she puts it under her pillow for the Tooth Fairy.
The next day she wakes up, looks under the pillow, and the tooth is still there. She asks her mother why the Tooth Fairy didn’t come?
Instead of explaining the mother yells out to her husband, ”Bill, you forgot to put out the tooth fairy money, didn’t you?”