Femdom Scat Tube -

"Scat play" involves a fetishistic interest in feces, which can include a wide range of activities, from the consumption of feces (coprophagia) to the use of feces in sexual play. It's a niche within the BDSM (Bondage, Discipline, Dominance, Submission, Sadism, and Masochism) community and is considered a form of extreme or edge play.