Replying to Just almost in the deepest shit ever

So me and my buds thought it was a good idea to go egg some cars. Me and a friend are sitting in the bed of another friends pickup throwin the eggs. One time, i saw it was a cop so i told him, but it was too late, he had already thrown it. It was the most perfect shot ever too, square on the hood. He pulls us over and is RAGIN pissed. I've never seen anyone that mad. He takes some people into the squad car and the friend who threw the egg is possibly getting a felony for assault on a police car. the rest of us just got warnings. The cop said he is going to call our parents, so we should warn them, but idk if he actually is. what are your thoughts NS? Should i tell them or just see what happens?