Road Prank... flipping the other driver off? Does teenage boys have nothing better to do. Can we do something?

These boys are in a car and they honked and flipped me off. They keep driving around me flipping me off. They eventually turn down the street to their high school. Great! I am getting flipped off for no reason by some stupid high school kids. I mean what can I do? oh trust me I fipped them off in return. I was a little angry. But what could I have done instead?

Today driving to work, these four boys were in a car...one of them had his face mostly covered by a hoodie keep staring at me. He didn't say anything...I pulled up my window and move my car up a bit.. Then his friend in the front started staring...I was stucked at a light and got no where else to go...the driver moved up a bit, the kid in the back started staring again...I mean what am I supposed to do in this situation. I am driving alone in a car by myself. Are they doing that for fun? It's not like I can even call the cops...they haven't really done much other than annoying me and ruin my day.