Season 2, Episode 3
No one really respects the "authoritah" of a kid dressed in regular kid clothes. So when Cartman's given the opportunity to police South Park, he embraces it fully. In menacing reflective aviators, official navy police shirt and dark brown pants, he visually represents the long arm of the law, which, in this case, can only reach up to people's shins. Still though, the shins of anyone who doesn't respect his "authoritah" get a savage beating from his baton.