Anal fisting was first described - albeit in passing on a list of sexual stunts - in the Marquis de Sade's Philosophé dans le boudoir. It re-emerged as a practice among the gay motorsports clubs of post-WW2 East Coast America, and spread to Europe and Britain. Women got involved in fisting, too. The best account is by Gayle Rubin, "The Catacombs: Temple of the butthole". It really is, as Foucault suggested, a new way of experiencing the body and pleasure. In this clip, an anonymous Domme in long black latex gloves approaches me from behind, teases me with her boots, I rub myself on her hairy legs, and then she fingers and then fists my arse. I love this kind of pleasure. You can tell, because I squirt out so much prostatic fluid it is running freely from my cock. Those are the best orgasms.