Fisting

Fisting—also known as fist fucking (FF) and handballing^[1][2]—is a sexual activity that involves inserting one or more hands into the rectum (anal fisting) or the vagina (vaginal fisting).^[1] Fisting may be performed on oneself (self-fisting) or performed on one person by another.^[3] People who engage in fisting are often called "fisters".^[1][4]

Fisters have developed a distinct subculture with its own history, norms, and values, including literature and clubs for sexual, social, and spiritual exploration.^{[5][6][7][2][8]}