Cerfew
In America, many cities and towns have ordinances (local laws) that prohibit kids under 18 from staying out (especially in groups) after midnight.
Reasoning: Kids under 18 in groups tend to do dumb things, i.e.: underage drinking, drag racing, smoking weed, criminal damage to property, etc.
Or in the poster's case...driving around in a group and someone in the vehicle is breaking the law.
Original poster: you are who your friends are. Stay on the right side of the law AND make sure your friends do too. Having any sort of tickets makes your insurance costs skyrocket (if they do not drop you altogether) and a criminal record haunts you forever.
Maybe this was a good thing to scare you into being more careful?
Good Luck!
68ROX