"Why Did Brad Leave Jen" joke

A teenager comes home from school with a writing assignment. He asks his father for help. "Dad, can you tell me the difference between potential and reality?"
His father looks up, thoughtfully, and then says, "I'll display it to you. Go ask your mother if she more...

Chicago's Brad Miller says he's not interested in the Knicks. So he'll fit in perfectly in New York.

The school teacher was furious when Brad knocked him down with his new bicycle in the school yard. "Don't you know how to ride that yet?" he roared. "Oh yes!" shouted Brad over his shoulder. "It's the bell I can't work yet.