From page 413 of the Kama Sutra:
Cho Kyo Chicken. Tie rope around genitals, now around neck. Have fun.
It's now coming out that David Carradine may have died from self-asphyxiation while masturbating. Guys will do some pretty crazy things for sex, but c'mon, what's the appeal here? I just don't get it. If you need to strangle yourself to get off, then here's a little hint: You aren't doing it right.
Note: "Cho Kyo Chicken" came from my long-time blogging bud Tuning Spork.