I decided that this was the time to take Switchablesusie up on her challenge to hold an M&M for 20 minutes. The reason why this was a good time to do it is that I have an old 4 quart bag that is very scuzzy and is going in the trash next week and I was not worried about cleaning it up.
So I put a pint of molasses, a pint of whole milk, and a couple of dabs of yoghurt and a quart of water in a pan and brought it up to about 105 degrees. I now had just over 2 quarts of solution. It then went into the old bag and a double balloon nozzle went up my but. For reference I have taken 4 quarts but my normal capacity is maybe 3 1/2, so this was just over half what I could normally take.
I hung the bag higher than usual due to previous comments that the thicker mixture required it. I started the flow at t=0 and for a minute it was pretty standard fair but the solution caused early cramping and the expected 3 or less minutes to get it in turned into 5-6. This cramping was not gas -- but was due to the solution itself being unpleasant to my intestines and they wanted it out of there. I finally got it all in but the cramps were intense.
At t=12, not the 20+ I had hoped for, I exploded into the toilet and got rid of much of the solution. Susie won again. Then I decide to try what Susie said she does and I put the tip back in, inflated it, and started cleaning up. It seemed like things were pretty much done but that turned out not to be the case. Cramps built again to the point where at t=25 I had to release the pressure and explode again. Now I once again thought I was about done and did not put the tip back in, but after a few minutes I could feel gas. There was rumbling, pressure, and my stomach was expanding as if I were taking an enema. At t=48 I sat down on the toilet for a long session of farts and a surprising amount of "stuff".
Finally at about t=55 things calmed down and I was truly done. Normally 20 minutes after I start an enema I am done if I have held for only a few minutes so this M&M enema took 3 times as long as a larger tap water enema. It truly was quite the experience. I won't be doing it again soon but I am glad I did it.
In retrospect I had tried the M&M once before and thought it was not all it was said to be. The initial cramps had caused me to not get it all in and I held it almost no time. As a result I did not have the more dramatic long expulsion complete with lots of gas. To get the full experience you have to coat the entire colon with the solution and have time for gas to form. So expect a bit of a challenge getting it in. A smaller volume would be easier but I suspect that it would not reach all the way up the colon and you would a less dramatic expulsion.