He's just dumbfounded from your I inferior base 10 counting system, keyboard layout and computer placement. (Seriously? are you trying to over heat it?)
Your teeth don't need exercise per se but your jaw bones and muscle dose and it can help your teeth grow straight, preferably from hard vegetables or meat fats but technically it would work with hard candy it just has the unintended consequences of rotting your teeth.
Damnit Newton! You cannot impose your laws on everyone like that! Some of us want to float around the sky.