Geng-beng (English Gang Bang) is a type of group sex in which a participant is simultaneously in sexual intercourse with several partners. Most often, the concept of gang bang is understood as intimacy between a woman and a group of more than three men. If a woman has sex with three men at the same time (“3MJ”) – this is triple penetration, a woman with two men —MFM) – double penetration. If a man has sex with a group of women — reverse (royal) gang bang. In Japan, the so-called bukkake has gained popularity — oral sex with ejaculation on the face with the participation of a woman and a group of men, simultaneously or in turn.