Me: OK guys, you've *got* to get your hair cut! I've made an appointment for you for this afternoon. How do you want them to do your hair?
B.: I want mine long.
Me: OK B, but last time you weren't happy with what you got. Maybe you should bring a picture of the haircut you want so that the stylist knows what you like. Whose hair do you like?
**Follow-up: In the end he decided to get it cut shorter so that it doesn't get in his eyes at the pool this week. His hair turned out great, just for GOD'S SAKE, please don't tell him it looks "just like Justin Bieber"! ;-)