My youngest son who is not yet three woke up the other day and wanted to wear underpants "like the big kids" so I figured we would try it. I asked him, repeatedly if he had to go potty and he continuously said no. Just as I was about to get him from the playroom to put him on the potty I heard his brother (who is 4) say, "Do you feel like you have to go poopies?" He answered, "No, I feel the poopies in my pants." Needless to say he is back to diapers, I have no desire to try to train one more boy who is not remotely ready!