Season 9: Episode 201: The One with Rachel's Phone Number
Joey gets Knicks tickets for himself and Chandler, but Chandler wants to be with Monica. He tells Joey that he has to stay in Tulsa, but when Joey finds Monica preparing for a night of seduction, he thinks she's having an affair. Rachel (in a dress that really shows off her assets) goes out with Phoebe for a night on the town. Meanwhile, Ross and Mike hang out together but find they have nothing interesting to talk about. Rachel gives out her phone number to a guy and then regrets it later, worried about it interfering in her possibilities with Ross. She and Phoebe try to get home before the guy calls for her. Ross gets the call anyway, but doesn't tell Rachel.