Raj: Hey, we've always talked about playing together.
Howard: Well, it could be fun to try a little acoustic thing.
Raj: Oh, we could play "filk" music.
Stuart: What's that?
Raj: It's been around for years. It's like folk music, but with a sci-fi/fantasy theme.
Stuart: I like it. It sounds exactly like something I shouldn't be expected to pay for.