Small sculpture of a voluptuous lady that was exhibited in taverns to indicate that there was also a brothel. The origin is in a mythological, demon that takes the form of a beautiful woman to seduce and thus corrupt the monks, although they can choose any male for other purposes, such as extracting their vital energy during orgasm or something from their semen to recycle it as a Incubus. In Latin it is called succubus, sub- ( "down, below" ) cubare ( "lying down" ) as it lay down to receive the male.
