When preparing for deep anal stuff, an enema is an essential part of my preparations. But how much can I really hold? That's what I wanted to find out today. So I got into the shower and took this huge 400 ml syringe with me. Without any further ado, I got pumping. At first, it was a strange feeling. Usually, the inner sphincter is closed and it felt like there was little space. The second syringe made me feel like I was about to leak. But I kept it together and got another one. With the third one, the pressure was big enough to overcome my inner sphincter. It opened up and immediately, the water flooded into my colon. Now I could keep going and add more and more Water. I could feel my insides expanding as the water reached my transverse, and then my ascending colon. Eventually, my entire belly was filled with water. It felt so heavy and full but the pressure made me feel so hot and horny. This might have been my limit for now but who knows - with some training I might be able to fit even more in the future. I'd be down for it!