A means of intensifying orgasm by depriving the body of oxygen. Is preformed my both sexes, and can be done alone while masturbatiing, or during sex. People usually bite on a citric fruit, eg lemon, lime, to bring them back to earth after they orgasm. It often accidently kills the people preveorming it.
That aussie rock guy died of autoerotic asphyxiation, y'know.