Chandler: Are you really going to date that nurse man?
Monica: Well, you and I are just "goofing around." I thought, why not "goof around" with him?
Chandler: I don't know if you've looked up "goofing around" in the dictionary. Well, I have and the technical definition is: Two friends who care a lot about each other and have amazing sex and just want to spend more time together. But if you have this new fangled dictionary that gets you mad at me, then we have to get you my original dictionary. I am so bad at this.
Monica: I think you're better than you think you are.
Chandler: Really? Okay-
Monica: Know when to stop.
Chandler: Okay, I sensed that I should stop.