Quote from Rachel in The One Where Ross Moves In
Rachel: Walked right into that one, didn't he? Monica: What one? You wanted him to invite you to the party and he did. Rachel: Yeah, but he waited until the last minute. So if I said yes he would know I had nothing better to do than wait around for an invitation to his stupid party. But I said no which puts me back in the driver's seat. Monica: So the ball is in his court? Rachel: Ball? No, there's no ball.