Howard: You busy? There's somebody out here who wants to meet you.
Bernadette: Who is it?
Howard: Say hello to everybody's little friend, remote control Stephen Hawking!
Bernadette: Where did you get that?
Howard: I found him in an old box.
Bernadette: Why would you buy it?
Howard: I didn't buy it. I made it.
Bernadette: Last question. What is wrong with you?