Under Where?

Paul: Look under there.
Laura: Where?
Paul: Under there.
Laura: Where?
Paul: You have to say "under" too. Look under there.
Laura: Under what?
Paul: Under there.
Laura: Under there?
Paul: Look under there.
Laura: Where?
Paul: It makes me think she knows and is messing with me. But I know she doesn't. Look under there.
Laura: Where?!
Paul: You have to say "under" too.
Laura: Why?
Paul: It's a joke. Look under there.
Laura: Under there?
Paul: Hey, Karen, look under there.
Karen: Under here?
Paul: I give up.