Hi first time posting here but I had too much fun with a makeshift water inflation that I couldn't let myself not share it.
Using a cheap airmatress from walmart (~$20 for twinsize) I wore it as a makeshift onepiece covering my front and my butt using a belt and bunji chords to hold it in place before putting on some streatchy clothes over the set. Then since this airmatress had a built in oneway valve i hooked that up to the hose from the showerhead and sat down in the shower as i slowly began to fill the matress up with water. Slowly I grew larger and larger and heavier as well with every passing minute of water that filled the matress cradling me as if it was my own belly and rear. I kept this up to where I would have trouble moving then kept going to where I was unable to move from under the weight before continuing where the stool i sat on began to give out from under the additional weight.
Moving to where I could sit up and empty the water out took alot of work but the struggle to push and pull myself to the end of the tub made it all the more thrilling.
While it can be a thrill for water it's alot easier to do with air and if you try using water i recomend having a partner so you won't have trouble getting out. OH and be sure to have a couple of towels just in case