I absolutely love being humiliated by prostitutes that don't have any scat experience, seeing the disgust on their face is much more humiliating and authentic than what a hardened pro-domme can provide.
Last year I had an amazing experience with a Romanian girl in a brothel. She was asking me a lot of questions about previous S/M experience and she half-jokingly asked if I ever let a girl poop on me when she noticed how turned on I got licking her butt. She's never pooped on anyone but she seemed intrigued and really wanted to make some extra money so she asked me if I would like her to which I obviously couldn't turn down
We got in the shower and she hovered over my face, initially struggling but finally being able to push out a turd. OMG, the look on her face when she saw me with her poop in my mouth! She started gagging and almost puked
Unfortunately she stepped away to let me play with it rather than puking on me or forcefeeding me but seeing the total disgust on her face was so beyond humiliating, a truly amazing feeling.
Ever since I am completely obsessed with the idea of serving a whole group of prostitutes as a toilet and watching them talk to each other and laugh at me. Knowing that they'll still be laughing about how disgusting and pathetic I am after I leave is just the ultimate turn-on