Amy: What happened?
Leonard: Well, we scrubbed out some barrels of irradiated grease, rinsed off in a safety shower and then told Barry Kripke what is what.
Amy: And he just gave in?
Sheldon: Well, we agreed to invite him to the wedding.
Amy: Okay. No problem.
Leonard: And he gets to bring a date.
Amy: Well, that's reasonable.
Sheldon: A-And if she charges by the hour, we have to cover it.
Amy: What else did you agree to?
Leonard: Well, um, you know how Barry has the voice of an angel?
Amy: He is not singing at our wedding.
Sheldon: (stammers) He only wants to sing "Volare."
Leonard: Oh, "Volare". That's what he was saying. Boy, I didn't, I did not get that.