Q. I have tried to worked my way through your Total Colon Clean Out multiple times and I just can’t take more than 1 liter of water at any stage. After all my attempts I feel empty but then later, and most frustratingly, during anal sex/play everything gets messy. Very messy. What is going on?

A. The 1L limit you describe is discussed in the Total Colon Clean Out but there is a lot to consider and this is a typical stumbling block, so let’s see if we can clear this up. Throughout most of the colon the fecal mater has a high fluid content. Something approximating diarrhoea with (maybe) just a few solid bits. It is not until the descending colon (which slides straight into the sigmoid) that things start to solidify. The rectum is the storage compactor (handles both functions). It take about 500ml (0.5L) to fill your rectum. If your rectum is not empty then 500ml will start filling the sigmoid. 1L will fill the rectum and sigmoid and a descent amount of the descending colon.

So you are getting 1L up your ass but it clearly isn’t all coming out when you want it to. When you sit to expel the enema, the colon pinches off the rectosigmoid flexure (the top of your rectum) to prevent anything going back up while rectum contracts to push its contents out. That empties your rectum but not your sigmoid or descending colon. With patience, your might get a second rush as the sigmoid empties into the rectum, but you still have enema fluid retained in your descending colon. The colon responds to the excess fluid (water) in the sigmoid and descending colon by keeping the rectosigmoid junction closed off. It tries to absorb all the excess water. After all, the colon is not suppose to move stuff into the rectum until it is ready to be compacted. Your brain “feels” that your rectum is empty but does not connect to any of the sensory neurons in the colon. You don’t “feel” the descending and sigmoid colon still have stuff in them.

So you will be stuck with the descending and possibly the sigmoid colon still full and an empty rectum. Your brain only senses the empty feeling of your rectum. Eventually (maybe minutes or hours) peristalsis will start to push the contents of your transverse colon into the already full descending colon. Your colon has no option now but to expel the watery sludge from the sigmoid colon into the rectum where you want to play. It doesn’t help either that activity in your rectum stimulates the colon to push things out.

One additional function of the gastrointestinal that can either help or hinder clean anal sex is the Gastrointestinal Reflex (Gastrocolic Reflex);

“The gastrocolic reflex is a physiological reflex that controls the motility of the lower gastrointestinal tract following a meal. As a result of the gastrocolic reflex, the colon has increased motility in response to the stretch of the stomach with the ingestion of food.”

In simple terms, eat to make yourself go empty your bowels before anal sex. Eat before an enema to make the enema fore effective at emptying your bowels. DON’T eat after have an enema. That will refill your bowels. For more on this issue the article Eating and Enemas for Clean Anal Sex.