Setting: Brother M was driving some people in SF and accidentally got on the wrong side of the road, and a police officer pulled him over.
Police: Do you know what you did wrong?
Brother M: Umm... I made a wrong turn and I was driving on the wrong side of the road.
(The police officer shines the light into the car and shines the light onto one of the friends)
Police: Can you tell your driver friend here which side of the road American drive on?
Friend 1: Ummm... Left??
Police: (pauses, then shines light on Friend 2) Can YOU tell us which side of the road Americans drive on?
Friend 2: Umm... Rrriiight??
Police: Is that a question?? (Turning to Brother M) Do you know how much this ticket is going to cost?
Brother M: I don't know.. a lot?
Police: At least 500. Do you think you can afford that? What do you do for a living?
Brother M: I'm a lawyer.
End of the story - the cop actually let them go with a warning at the end. I think he might have just been amused.