Quote from Phoebe in The One with the Stripper
Rachel: Hey, Pheebs, I'm having dinner with my dad tomorrow. Do you wanna come?
Phoebe: Yeah. Sure. He's kind of sexy.
Rachel: Oh, no. I'll be there too.
Phoebe: Okay, so we'll just come up with some kind of signal. If it's going well, you can take off.