Little Johnny came home after school:
“Daddy, I have a bad grade in the English language.”
“Why?” asked his father.
“Well, the teacher asked us the following question:
“Mary entered the forest with John and came out of the forest with Mike. What is Mary?”
“How come what Mary is? A wh0re, of course,” said the father.
“That’s what I said, but the teacher answered Mary was a subject.”