And he could carry around a stuffed Appa :)

he's 4. all 4 yr olds are mama's boys (or girls).

Yes, thumbs up to dad for setting his four year old up for even WORSE teasing than if his hair was styled. He's four, meaning his oldest classmates could MAYBE be six at most. Nearly every child that age does not have a concept of being a "mama's boy," because they're at an age at which they are still HIGHLY attached to their caretakers. Add in that pretty much every parent gets their kid's hair styled and cut the day before they first go to school, he WOULD have just been another kid in the crowd. NOW he's going to stick out like a sore thumb and far more likely to be bullied. And when bullying starts at that age it does not stop unless something major happens. So no, not "thumbs up to dad," dad needs some common sense and basic instructions at good parenting beat into his basic logic and empathy deprived brain. Especially since he's using the kid to passive-aggressively get back at his ex-wife without giving a **** about the collateral damage to his son. So, if you think that's acceptable behavior from a parent or guardian, do the world a favor and don't have kids, and if you already have kids, I feel really bad for them.