Ross: Look, I studied karate for a long time. And there’s a concept you should really be familiar with. It’s what the Japanese call… Unagui. Rachel: Isn’t that a kind of sushi? Ross: It’s a concept! Phoebe: Yeah, it is! It’s freshwater eel! Ross: Uh, maybe it means that too… Rachel: Oh! I would kill for a salmon-skin roll right now.