Raj: I thought you were boycotting Wil's show.
Sheldon: I was, but I decided to give it a shot, and I actually enjoyed it. Just out of curiosity, how did you come to be on the show? Did he ask you? Did you ask him? Did you just show up on the set and ring that doorbell?
Howard: Sheldon, if you want to be on the show, you're gonna have to apologize to Wil.
Sheldon: That would be the mature thing to do. Let's put a pin in that and keep thinking.