Someones in for a surprise

So I got hit by car in the parking lot today. I had just pulled into a spot and was out of the truck, when I heard a loud rubbing, screeching, followed by a loud pop. I noticed that my truck jarred to the side a little. I thought "ah fuck!" As I turned around to see what the hell happened I saw a scared shitless teenager peering through his windshield at me. He was previously parked on the passengers side of me, and backed out of the spot once I had pulled in. He obviously grossly mis-judged the swing, and his entire front end had hit my truck. I again thought "ah fuck!" So I walked around to the access the damage. My metal GMC truck suffered the damage of what looks to be salt from the roads on my tire. Maybe a three inch mark. It wiped right off. I turned and looked at the driver as he rolled down his window, and said "don't worry about it." He was very thankful and asked repeatedly "are you sure?" I told him it didn't do anything to my truck and I wasn't worried about it. Then he drove off hurriedly, probably to not allow me to change my mind. The funny thing was he never got out of his car. Or I am guessing never got out of his parents car. His little plastic Prius suffered a far worse condition. The entire front bumper was gaping wide open and hanging on one side. Large black streaks all across the front onto the side. I'm guessing he was very thankful that I did not want to get police or insurance involved. However I can't keep his parents from finding out.