Happily making curlicues on cones and serving Blizzards upside down, the teenage son of a friend of mine is experiencing his first real job this summer behind the counter at Dairy Queen. So far it seems to be going well. He’s already received a raise and has been promised a position as manager once he turns 16. This young man also seems to be an expert at raking in tips. During a recent incident, he cheerfully and politely served a woman, who then told him to keep the change from her $20 bill. He was $12 richer when she left the shop, and by the end of the day, he had $30 in his tip jar. His fellow co-workers didn’t fare nearly as well. While the summer of COVID provided dismal job numbers for teens, this summer is already more promising. Office internships may still be a no-go, but opportunities …