Quote from Fez in On with the Show
Fez: You told me you wanted to tell Hyde that you still love him and you wanted him back. Jackie: Yeah, well, it's obvious he doesn't want me back. So you better not tell him what I said or I'll be humiliated. Fez: My lips are a seal's. Kelso: Wait, don't you mean that your lips are sealed? Fez: I'm not hearing the difference.