The role of social proof in marketing idiotic ideas
Pay close attention to the messages you get, when they're wrapped in "why don't you do at this other person does?"
It's mighty easy to manipulate a lot of people to believe and do dumb or self-destructive things.
You might want to say "but this is only true of children" — to which you should think: why is it that most marketing targets adults? The only difference is level of sophistication.