I encounter it in the 22nd episode of the 9th season of Friends. Here is the context:
Phoebe: (entering and talking on mobile phone) Ok, great! All right, bye! (she hangs up) Pain in the ass!! (she looks at the others, then back at the phone) That's off, right?
Joey: What's the matter, Pheebs?
Phoebe: Oh... Mike's sister just invited me to a party tonight, he's gonna be there. And she was like "Oh, don't worry! I asked him. He's totally ok with seeing you!". So now I have to go so he'll think that I'm totally ok with seeing him!