Is it normal for a 13 year boy to have a 1/2 penis?Because mine is and it havent growed,my friend is a bout 6 1/2 because when i spent the night over his house i went to use the bathroom when i opened the door it was big,im not growing facial hair but i am growing armpit,some PLEASE HELP.what do i need to eat or take.PLEASE RESPOND AND HELP.