Phoebe: It's, like, the third time that lady's won on a machine I was playing.
Ross: I bet she's one of those people.
Phoebe: Mole people?
Ross: What? No. No, a lurker.
Phoebe: What's a lurker?
Ross: Okay, when you're playing a machine and it hasn't paid out, a lurker waits for you to give up and then-
Phoebe: Kills you?
Ross: No. They swoop in and steal your jackpot.
Phoebe: Oh. How do you know about this?
Ross: My nana used to do it. That's how she paid for my dance- Karate lessons.
Phoebe: Dance karate?
Ross: Yes, it's a deadly but beautiful sport.