Its kind of funny you mention that. My daughter is our only child. A boy kept picking on her last year at school. He would pick on her and he is a mean brat. She finally had enough one day and punched him in the side below his rib cage. She made him cry. I didnt know she knew how to hit or that she could hit hard enough to make a boy cry. I am glad that she did stand up for herself. I just hope she dont have to put with to much crap from boys.My son is 5, his baby sister is 4. My son is 4' tall and 80lbs. He will be trained on what to do to other boys who mess with his little sisiter...my guns are plan B.