>Took caster oil a little over 2 hours ago
>After a while, put in a tunnel butt plug
>Feel some movement in my gut, followed by some seepage
>Happens a few times
>Eventually a big one comes, pushing a wave a mush into my diaper
>No sensation from my ass, but I can feel it creeping up my back
>Sometimes can't even tell if I'm pooping right now or not
Holy crap, this is amazing. I hope more of these waves continue.

The only minor issue is it sometimes feels like I'm about to poop out the plug, so I have to sit down on it.