Perhaps a case of TMI but I take longer...now. The bladder is a muscle that weakens with age so I have less pressure and distance than in my youth. I'm not even sure if I could write my name on the side of a building any more!
It's another use of the term. It's not limited to entertainers.
I’d bet my paycheck it started with a defense lawyer’s objection to a cop (the arresting officer) calling his scumbag client (the defendant) “perpetrator” while testifying. “Not only does it imply guilt, your honor, but it offends my client, and causes undue distress to his loving family and friends.” And that would definitely lead to suing for pain and suffering.