I have one, but I'm not willing to say what it is exactly so I don't out myself on here! It's not obviously relating to escorting, but it comes from Victorian slang but even if someone knew this bit of trivia and they didn't know anything about my sex work they'd really not twig!
I had it done because I wanted something relating to sex work because it is a significant part of my life and has caused so many significant changes in my life and to who I am I wanted a tattoo to reflect that.