Phoebe: (about sleeping with clients) Oh, no, it is forbidden! No, no, Mrs. Potter fires people for messing around with clients. ...And it's against my oath as a masseuse.
Ross: They make you take an oath?
Phoebe: No, I made myself take one. Yeah... no fooling around with clients and, um... always be prepared. (seeing everyone looking at her) Yeah, that one's actually from the Boy Scouts, but it just makes good sense.