Currently, it is the Texas Grand Prix. You are messing around with another driver and you take his cowboy hat and put it on your head. Charles sees this and gets jealous. He walks over.

"Don't you know the cowboy hat rule?"

Charles asks a little annoyed. You look at him confused. Charles then rolls his eyes and then explains

"wear the hat, ride the cowboy"

He states as he puts his hat on your head