Quote from Joey in The One with Rachel's Big Kiss
Joey: They're not invited? Oh, no, they're gonna be crushed. Monica: Why would they think they're invited? Joey: Uh, you got me. I don't... Monica: Joey! Joey: Look, I thought parents were coming. Your parents are coming. Chandler's are coming. Ross's parents are coming. Monica: Ross's parents are my parents. Joey: Well, see, parents are coming.