shoot you, taze you, take the gun, take you,and your parents and trow away the key.
ok, you asked for the worst, thats it.
now for what will most likely happen.
you are not old enough to process a firearm without parental supervision. They must be with you if you have a gun.
you will be held, they will have the gun. Your parents will have to go down to the station to bail you out. They, and you will be charged with a minor in processing of a firearm, You will most likely not see that gun again. If you do, it would take about 1-1 1/2 yrs to get it back. plus fees.
Please, for your sake and that of your parents, just sit back and relax and wait till your old enough, or have your mom or dad with you at all times.