I HAVE done 4-qts of soapsuds.
Most recent one was this:
I did a system cleanout first, Cleared the stomach with fasting, then a slow-acting oral laxative to get things moving, then a series of 3-qt enemas, the first an ESS to work up to it.
Mixed up a thick soapsuds enema right in the open top "great white" bag. Used my hand in the bag to break up the soap lumps.
Hung it from the same hook I had hung my cleanout bags from
Attached the "Barium" nozzle
When I took it I was cleaned out.
Even then I took my time, lubed the nozzle with off-brand equivalent of KY Jelly.
Dummy here had to lie there in Simms position LOOKING AT IT for a few seconds. MISTAKE!!
Finally just said to myself, "I know where it needs to go, Just get it there!" I remember gulping a little as the flared part went in.
I lay there for more than 5 minutes just like that, with it in me, but the valve closed. I knew it would hurt, but I just had to muster the courage.
Took 5 deep breaths, finally said, "Here I go!" breathed in as deep as I physically could and popped the valve.
It ran in surprisingly fast. YES IT DID HURT!! The first time as an adult I cried from physical pain. Mental pain yes, but that was the first time when the pain was physical.
I kept it in 10 minutes! Felt some nausea, especially late. Didn't actually throw up. If my stomach had not been completely empty I probably would have. I left the valve open when I ran to the toilet. Held the bag above my head until I started to lose it, then dropped it to my waist. Water rushed hard into it. When I got into the bathroom, I hung the bag-remember valve still open-and hung the bag from the shower curtain rail,and leaned forward over the toilet. Essentially my body went through the whole "Throw-up" sequence, the retching and all but there was nothing there to come up.
When I just could not hold it even a few more seconds, I took the bag down, placed it about 18 inches from the bathtub drain with the open end pointed towards the drain so I could see hat was coming out. What came out was mostly yellow, and slimy, with some what looked like tiny pieces of food embedded. When it stopped flowing I pulled the nozzle out, sat down on the toilet, and started slowly rocking back and forth. Took me only about 15 minutes to get it all out.
I DID have to lie around for about an hour, or twice as long as normal before I felt good enough to get dressed and start cleaning up.