I'm a hard core masochist. Certain types of pain can bring me to orgasm. I love being tied with my hands above my head and having my bare back lashed with a whip. A quality single tail whip produces a pain like nothing else. My first time with one the girl looked like she was barely swinging the whip but it cracked and left a sting that was incredible. I did not realize until I got into the S&M world that the crack of a whip is caused by the end of the whip breaking the sound barrier. If you know good technique you do not need to swing hard.