Messed last night, and although I changed out within 20 minutes and hated the cleanup, it felt great. I'd held starting the day before, and loaded up on Metamucil powder the previous night. By the morning I felt a strong urge to go, but I held out until midnight.
I may or may not have gotten inebriated. I dressed myself in a pink Sunkiss Masterpiece with a booster, plastic pants, a onesie, and footie pajamas over everything else. I drank apple juice from my Rearz sippy cup to fill my bladder before I messed. After listening to some various messing hypnosis I finally put on a Dreamalittle RP video and messed when she said to.
With a slight bend of my knees, it came out easily after the initial push. I felt a lump grow in the back of my diaper as the muck settled. When I sat down I realized how much I'd actually went. It spread around a lot. I peed a lot and came a few times in that diaper, so overall I'd call that a success.
Now, I'm just going to put it out there that although I did enjoy this a fair bit, actually going through with the preparations necessary to really enjoy a big mess like this takes some willpower. If someone was to encourage me to do this again, and maybe even provide some instructions, there's a good chance I'd be more willing to do so again, and write about it here. I have more diapers and Metamucil to go through, after all. :)