American Heritage Dictionary defines slut as a person, especially a woman, considered sexually promiscuous, a woman prostitute, or a slovenly woman.
I enjoy erotic humiliation. I have no problem being called a slut. I know what I am, and I'm not afraid to admit it. However, what I find hurtful is when people who supposedly love you for who you are, or in spite of it, suddenly decide that they have a problem with what you are. I find these people to be extremely insecure, and the only way they can feel good is to put others down.