Lol. My dd used to chew her hair at 8. Now at 9 it's her sleeve. She used to give me her backpack and the handle would be wet. Gross! The chewing comes and goes. Last time we were at the orthodontist he suggested that all her adult teeth were coming in but her baby teeth wernt falling out and if they aren't all out by april they will be pulled. I wonder if their crazy teeth between age six and ten have something to do with the chewing. Babies do it when they get teeth. Just a thought. It is what I tell myself anyway so the behavior doest make me crazy. And when it was the hair, I had it cut.