text: It's not your choice if he carried insurance on you.  Belly button piercings get infected very easily and that will mean a trip to the doctor and medication.  Its not fair to put that on your parents when they said no to begin with.  If my daughter came home with it done anyway she would have to remove it and then be grounded... at least.  When you have your own job and insurance then by all means, have at it.  Pierce whatever you want.