Quote from Ross in The One Where Monica Sings
Ross: Okay, you really don't know what I'm talking about? Chandler: No. Ross: Okay. Last night, after the party I saw Rachel kissing that jerk from her office out on your balcony. Chandler: Our balcony? Seriously? That's so funny, because I told Monica we should put lights on our balcony and she said, "No, no. It's too cold. Nobody will go out there." And I said: "Maybe if we put some lights out there they will." Ross: Right, that's what I came over to talk about. I saw Rachel kissing some guy on your balcony, even though there were no lights!