My son who is eight likes to wear his brother diapers. I found him going in the babys room and undressing himself and putting it on. He went in the bathroom and was in there for about 15 minutes. I didn't know what he was doing, and he didn't know I was watching him, as he walked out I asked him what he was doing in there and he said "Nothing". Then I smelled it! He pooped in The Diaper. I told him come here, and i pulled down his pants and opened his diaper, and I see a diaper full of Poop and pee. I yealled at him and made him go to his room. I ask him why he did it. He dosen't know. Every so ofter I see him going in the babys room and grabing the diapers and running to the bathroom, sometimes i catch him but sometimes i dont. I woulden't know he was doing this intil I smell it. He walks around in the poopy diaper. he sits on the coutch, and runs around in it. I dont know what to do, he knows how to go to the bathroom and all. Whats wrong with him.