When I was younger and learning through fantasy what turned me on, I loved the idea of someone - me or my "prisoners" - being used as furniture. I still love it as a fantasy - there's a classic bondage artist called Benson who draws it excellently, and a guy called Gord (www.houseofgord.com) who specialises in making it happen for real - but most of the time, in real life it's only fun for a few minutes.

But there are situations where it works wonderfully for me. When I had visiting slaves regularly, one of the high points was to strap a specially made tray across a kneeling sub's shoulders, so it made him into a table I could eat my lunch off while he sucked me. I probably still have some pictures somewhere I could dig out of my files if people ask nicely

More generally, calling a sub things like "slut" or "fucktoy" is a form of objectification, telling hir sie only exists for you as a sex plaything. And yes, while most subs want or even need to be objectified at that level, it can be hurtful for people who have a background of not being treated as a real person.