A father was with his two sons. This park does not have a playground. They were flying kites and having dinner. After dinner the older boy (8 or 9) walked around while the younger boy (2 or 3) stayed with dad and roasted marshmallows. The older boy stopped at their truck and opened the door. The dad called out, "----- don't play with that my keys are in there!" And the boy closed the door. The dad asks him if he locked the door and the boy said yes. The dad was FURIOUS and walked over to try to open the door. When he realized the doors were all locked he pounded the truck a few times, turned around and smacked the kid on the side of the head. He said, "I can't believe you locked the keys in the car after I fucking told you not to! You are such an idiot! Go sit down--far away from me!!"
It started to rain and the guy ended up breaking the back window to get the kids out of the rain. He didn't talk to his son again there.