The Tummypro, is the #2 post right here, as this post is #5 here.
I did it yesterday and had success getting my 20" X 9/16 inch colon tube to go on over my belly button.
Was having trouble getting it up past my "sigmoid" flexure with only water, and mixed some J-lube. Pumped in about 8 ounces and started again. It was cool, going in with squirts. I use a modified lotion bottle for that. All i did was mold wax around the pump nozzle to give it a smooth spout.
Already having a pint of water and 8oz of thick J-lube, i still had trouble getting it to pop past the sigmoid, but felt it bump loose and began to ease it on up. The 9/16 tube with Delrin terminal's end stopper has a natural slipperiness of its own and having used a very small leather punch, it sprays out radially with six streams (very interesting when only an inch or two are inside the sphincter muscles.). 👍😉
When the tip stopped up in the "splenic flexure", i exercised with the "Tummypro" description and on my back, took in all the air i could put into my lungs, and then in steps managed to work in even an even deeper lung expansion. This maybe expanded my belly 3 fold, hiding my pecker from view down my expanded belly. (I am only 5' 9" & 180 pounds, fat) Then bearing down, forced my belly to go even rounder, the tube started easing on around through this hair-pin shaped flexure curve a little under the tip end of my left rib cage. Working the tube up with my right hand and my left massaging along its travel i could feel its firmness and further encouraged its advance. Sure enough, i could sense the tip arriving above my belly button. To prove its presents there, with only a finger-nail supporting the bottom edge of the tube at the connection to the long hose, i could feel that base edge respond to my pressing with my other hand pushing on it where i felt that slight bulge over my belly-button.
Satisfied, it had arrived, i released enema waters to begin spraying. Barely warm 85 Fahrenheit water helps me better sense its filling with a subtle cool sensation spreading up there. I then slowed it to a minimum and turned on my awareness to getting filled. It was going and i was growing. My anus was not feeling it at all. My ascending colon on my right side was getting bigged. I stopped it and jiggled the water slosh on that side, without much sensation down at my anus at all. Letting it go again, the fill started expanding my left side, which normally gets bigged first. I wanted to weigh up on the scales and see the extent of this engorgement. 7 pounds from a 10 pound, 5 gallon reservoir. The bag was near empty, but that is normal for me as i allow myself to leak a lot in the shower floor, as i fill. So, i always weigh before and after to get a good look at what's in there. I would like to walk around with it inside, but with more than two quarts, that is impossible and even weighing on the scales is not always a neat trick. 3-1/2 quarts is almost my top fill. Only once with very warm water, i got my belly any bigger with maybe an extra cup, which is not normally a goal anyway, but sometimes has become an idea i want to go for. Usually with such big fills, i am unable to get up off the floor to weigh without blowing it. But with the tube tip causing a slight swelling above my belly button, i was able to get up and weigh myself, for bragging rights.