Quote from Phoebe in The One Where Ross Finds Out
Chandler: Okay, so what is it? Am I hideously unattractive? Phoebe: No, you are not. You are very attractive. You know what, I go through the same thing. Every time I put on a little weight, I start questioning everything. Chandler: Whoa, whoa. I've put on a little weight? Joey: Did you want to? [Ross and Joey get up from the couch] Phoebe: No, not weight. More like insulation.