In recent times, I have noticed a peculiar sensation after engaging in anal sex or inserting a plug in my anus. I am overcome with an incessant desire to defecate. It appears that my inner sphincter has grown weaker, unable to withstand the penetration of my anus. Strangely enough, I find this new development appealing. The more I defecate, the more I can indulge in the pleasurable and playful nature of this act.