A fork of Rural Dictionary
A used, soiled diaper that you forget about and leave in a hot car, in a diaper bag, or somewhere else where the aromas get to develop.
My wife changed the babies poopy diaper and then forgot about it in the back of the car… opened the car after a long-hot day at work to a fully cooked crockpot diaper. The air was fillled with an amazing bouquet of fully cooked baby poop.
When you change a poop diaper and leave it in your car to stew and royally stink up your enclosed car.
Honey, did you leave a Crock-Pot Diaper in the car all day in this heat?