I think I would definitely speak with a healthcare professional... A son of a friend of mine had the opening that was too small, so he could feel when he had to go, but by the time he felt it, it was too late. But, at the same time, it could be a slight amount of jealousy. But, I would ask a doctor before I just rule it laziness... I know my son would be having soooo much fun playing that he would hold it until the last minute and then wet himself. He's still done it once or twice at 7. Okay, my last suggestion, is maybe watch how much and what he is drinking. Maybe keep the drinking to only while he is eating, unless he is outside playing and needs the hydration. Hope that helps and you get it under control! Good luck!!!
at 11:24 AM on Oct. 13, 2008