Quote from Monica in The One with the Kips
Phoebe: "The most popular Phoebe in tennis is called the overhand Phoebe." "If you win, you must slap your opponent on the Phoebe and say, 'Hi, Phoebe'!" Monica: That's cute. We really all enjoyed it. But you know it doesn't count. Phoebe: Count for what? Monica: Doesn't count in our heads as good Mad Libs. Chandler: I guess fun time's over. Monica: No, wait, wait, guys. If we follow the rules it's still fun and it means something. Chandler: I'm going to take off. Monica: Guys, rules are good. Rules help control the fun.