In short everything: the initial pressure in my bowels, relaxing and feeling my diaper fill up with warm poopie,, feeling potty settle in my diaper, walking and then sitting and feeling the warm squish, the emotional and physical catharsis sometimes makes me shudder in pleasure like a dry orgasm. Fortunately, I do not mind cleaning up at all, and have it down to a science that only takes me a few minutes. The poopie diaper that I don't like is a diaper blowout. This morning, my Attends Premier diaper is wet, warm, poopie, squishy, and a little stinky. I also do not mind the odor emanating from my diaper.