Quote from Ross in The One Where Phoebe Runs
Monica: Why is Ross naked? Ross: I had to show Chandler something. Monica: Naked? Ross: I guess I have a, uh, guy problem. Monica: Is it the same thing that Chandler had? Chandler: Look, just come back later. We'll get everything squared away, and you can come back later. Monica: Okay. Hey, listen, there's still some of Chandler's medicine under the sink in the bathroom. Bye. Chandler: Bye. Thank God. Ross: Dude, what'd you have?