My 2 1/2 year old boy has an obsession with his willy. Not so much in the day time but at night or at opportunity when he doesn't have a nappy he touches his willy to it's erect. Why I'm sooo frustrated is he plays with it at night and then wets the bed sometimes 3 times in the night. Please tell me someone esle is experiencing this and how I can stop this. He's not potty trained yet