This was a terrific story, Personalias. I particularly liked how you turned it consensual with negotiation at the end. I often enjoy nonconsensual stories, but I also feel a little squicky and terrible about it, so having it resolve that way was a lovely relief.
(But I find myself hoping he'll agree to let her adjust him just a tiny bit... I mean, always having to think about it before using one's diapers is such a burden, surely Jack-Jack would want to be free of it...)