Quote from Ross in The One with Joey's New Brain
Rachel: Wait. What do you mean you're getting a new brain? Joey: Well, they're killing off one of the characters on the show and when she dies, her brain is being transplanted into my body. Ross: What? A brain transplant? It's ridiculous. Joey: Oh, I think it's ridiculous that you haven't had sex in three and a half months. Ross: It's winter. There are fewer people on the street.