I had caught up to a high school kid riding a cruiser with his helmet hanging from the handlebars. So I engaged him in a little Socratic dialogue:
Me: 'Scuse me. Do you mind if I ask you a question? What's with the helmet on the handlebars?
Teen: I dunno.
Me: Well, you made the decision to put it on your handlebars rather than your head, right?
Teen: I guess.
Me: You know that it's to protect your head, right? Are you more worried about protecting your handlebars than your head?
Teen: I dunno.
Me: Let me ask you, are you planning on going to college?
Teen: Umm, I guess. Probably.
Me: Don't you think you'll need your head for college?
Teen: I guess.
(The light changes.) Me: Just some things to think about. Have a good morning and be safe!
Now, in the kid's defense, he was riding VC and--I cannot stress this enough--he had gorgeous hair, thick and perfectly cut and gelled.