What is it called when people get paid to whip other people?

I'm not 100% sure about any of this, but I think "" is a term generally applied to any involving actual ual — this is as opposed to "" , which is less racy and may not always even involve full nudity. According to the dictionary, a dominatrix is "a dominating woman, esp. one who takes the sadistic role in sadomasochistic ual activities". Hate to say it, but your cousin is probably right. :)