Quote from Chandler in The One with Rachel's Inadvertent Kiss
Monica: We have got to beat them. Chandler: Why? Monica: Because Gary and Phoebe think they're a hotter couple than we are. Chandler: Oh. So? Monica: So? So we've gotta go upstairs and have a lot of sex and prove them wrong. Chandler: Monica, look, you've got to stop this competitive thing. It's crazy. I mean, just to impress Gary and Phoebe, you want me to go upstairs and have sex with you over and over and over- And I'm saying no to this, why? Get your coat.