My 3 1/2 year old ds seems to have his hands permanently in his pants and often takes his willy out of his pants and trousers to play with. Every time he does it I ask him to stop and have explained why it is not a good idea to do it but he just forgets and now seems to do it as a habit. His nursery school have today complained about it saying he does it all the time and when he gets his willy out the other children stare at him. They are saying it is a problem and I know it is a problem but I have no idea what to do to stop him. I have explained that other children won't want to be his friend, have said that willies are private and not to be shown to others etc...Has anyone ANY ideas, I am really at a loss?