I spoke about this on another thread but, for me at least, there is a fine line between arousing words that are humiliating and those that are degrading. There has to be a sense of possesion for the words to not be hurtful ie 'your slut.'

On the other hand, physical humiliation does push my buttons--the idea of making someone or being made to be sexual in nonsexual situations (in semi-public places or around coworkers) is quite a turn on.