Quote from Ross in The One with the Birthing Video
Ross: Hey, what do you have behind your back? Monica: Nothing. Just something I want to get Phoebe's opinion on for Valentine's Day. Ross: You don't want my opinion? Monica: Not really. Ross: Come on, I'm your older brother. Ask me. Monica: Oh, okay, big brother. Which one of these do you think would make your little sister look hotter so your best friend would want to do her? Ross: The red one.