Howard: I've worked with Hawking. He's got a great sense of humor. And I think he'd like it.
Bernadette: Okay, call him and show him. I dare you.
Howard: I have no problem calling him.
Bernadette: Fine, then do it.
Howard: Fine, I will.
Bernadette: While you're bothering the world's most famous scientist, be sure to show him how funny he looks getting stuck under our dishwasher.