L needed his diaper changed. I let him pick his diaper out and put it on. Once on, he didn't like that diaper any more. I had other things to do, so I left his room and told him to come downstairs. Well, he eventually came downstairs, but he was bare bottomed and screaming how he didn't like that diaper. I walked him back to his room and told him that was the only diaper I was only putting back on him. 25 minutes and lots of tears later he finally agreed!