Quote from Phoebe in The One with the Free Porn
Phoebe: Think about it. It's a taxi that people take when they need to relax. Rachel: It's a Relaxi-Taxi! Phoebe: The name was my favorite part. Rachel: Well, I came up with it. Phoebe: You did not! No, you came up with Relaxi-Cab. That's not good.