For those who like messing, here's an idea of how to clean everything up more easily. You need to have the house for yourself with no chance of others coming in or seeing you, but I guess that's a given for most people who try messing in the first place.
First of all, you make sure you're diaper's not too tight. Then, after messing, you take off your pants or anything you wore over your diaper, and go to the toilet. You slowly lower your diaper so that your chance of making a mess outside of your diaper is diminished, then you grab some toilet paper and scoop everything up, and toss it into the toilet. Just wipe the rest off like you would if you weren't wearing a diaper.
After all this, you can even decide to keep wearing the diaper if there's not too much residual mess. In that case, you'd want one with refastenable tapes, because it's probably too loose right now.
Personally, I've done this several times and it works wonders. It also helps eliminate the stench and doesn't necessitate immediate deposit of the diapers. Of course, it doesn't work if it's too soft, or if you like to sit around and wait before changing/cleaning up, but the former's just bad luck and the latter is up to you! =P