When he first encounters the traffic cop, Frosty has this infuriating exchange:
TRAFFIC COP: What's the matter? Didn't you see that traffic light?
FROSTY: What's a traffic light?
TRAFFIC COP: Up there on that lamppost.
FROSTY: What's a lamppost?
TRAFFIC COP: You want a ticket, wise guy?
FROSTY: I'd love one! To the North Pole, please!
Frosty doesn't just play dumb for fun: he must keep up a certain level of ignorance to avoid any legal ramifications for any potential misdemeanors he may commit as he's walking around town. Which wouldn't be an issue, except...