This morning my three-year-old ran in to the living room and said "I want to poop on the potty" I was so excited, usually he just wants to wash his hands. We ran to the bathroom where I noticed the smell.
He had just pooped in his diaper. Bummer. At least he's starting to make a connection. He knows he gets a treat if he does something on the toilet, so he'd climb down, look in the toilet and climb up again.