Knock, knock. "Who's there?" "Annie." "Annie who?" "Annie body home?"
Is pikachu called pikachu because he always say pikachu or is he saying pikachu because he is pikachu?
Whats the difference between your girlfriend and a walrus? One has a mustache and smells of fish and the other is a walrus.
What did one ghost say to another ghost? "Do you believe in people?"