I have not had it, but heard about it going around in some schools. They itch, but can't hurt you. If you have it a nurse or your parents need to wash your hair with a special soap and comb that kills them. It does not mean you have dirty hair and lice actually prefer clean hair. They are very tiny. So small that you may not even see them without a magnyfiying glass. It is nothing to be embarrased about if you have it. Kids usually get it by rubbing heads togther or getting in very close contect. The lice don't normally just jump to another person on their on. Make sure to tell your parents if your head feels really itchy for a long time.