Kinky is when he wants his testicles played with roughly, pulled and/or kicked. Can do.
Creepy is when his fantasy includes having another escort come in the door of his fancy hotel room with an X-Acto knife, cut the skin of a testicle and squeeze the ball out.
(He told me this and I almost fainted. Seriously. He had to get me a glass of water. He said that he had a film of it that he could show me and then pointed out his missing testicle.)
Is this the type of example that you wish to read?
Elisabeth