In the system of the O.T.O., this refers to a degree of the Order in which a person learns about using anal sex for sex magick. Some people have assumed that this is limited to sex magick as practiced by males (and is thus a code used by some magicians to mean sex magick practiced by gay or bisexual men). However, Crowley's diaries (Crowley introduced the degree into the O.T.O.) show that he used the term to represent sex magick using anal sex with men or women.