Funny Joke

A boy walked into the classroom. The teacher looked at him. "Where were you?" The teacher asked.
"On top of Blueberry Hill." The boy answered.
Another boy came in a few minutes later. "Where were you?" The teacher asked.
"On top of Blueberry Hill." The boy answered.
A few minutes later, a girl came in. "Lemme guess, you were on top of Blueberry Hill too." The teacher said.
"No, I am Blueberry Hill." The girl answered.