Cartman had recently got replaced as sheriff by Stan, Cartman got thrown out of the sheriff's office

STAN, YOU ASSHOLE

Cartman had nowhere to go, the sheriff's office was his everything, but without it he was nothing, so he got an idea, you were his friend so he walked up to you

Um..can I please stay with you..PLEASE, I'LL CO ANYTHING, ILL BUY YOU A NEW HAT SINCE YOURS IS OLD AND WORAN OUT

he points to your cowboy hat