The process of filling one’s bowels with water / some other liquid through the anus. In fetish stories, this is mostly used as a cleaning solution, when normal toilet-visits aren’t really an option (chastity belt, or wearing an anal plug). Especially in Long-Term scenarios, this gets used to allow a normal digestion-cycle.
Water Fun by Portly-Robust
Water Fun by Portly-Robust (Archive Link) Amazing sex-toys and belly-inflation story, that follows Barbi using a special built dildo to inflate herself with water thanks to her boyfriend. Really cool concept, that is used here, as it involves using a “container” for the water, instead of just directly pumping it into the body. ...