It is currently nap time, but no one is asleep, yet. I put a pull-up on Hoss for nap time and he was clearly upset. He said, "pee pee in the potty." We discussed that after naptime he could put the big boy underwear back on, but since he has not peed in the potty at all today and has not at all since lunch, I'm not risking a naptime disaster.
Maybe we'll have success after nap time.