Quote from Monica in The One Where Ross and Rachel Take a Break
Ross: What, is, uh, Rach in her room? Monica: Oh, no, she's still at work, but she told me to tell you to call her. Ross: Oh, what? Is she going to cancel on me again? How can she do this? Doesn't she know it's our anniversary? Monica: All right, uh, Ross. This is the extent of my knowledge on the subject. "Call Rachel."