A method of Sexual Abuse. A fetish of sorts. Method: Anal Sex proceeds between a man and a woman. While in the midst of the initial action, a sharp punch is delivered to the female's stomache by the male. In doing so, the rectum tightens so much, that when the penis is pulled out, the retal innards are removed with it. This "inside-out" rectum is referred to as the "Red Sock".
*hot anal sex*
Male: Bitch! *punches womans stomache and pulls out penis HARD*
Woman: Oh no! The red sock strikes again!