Reminds me of the story of the well-spoken Army Officer who was visiting the Royal Air Force College at Cranwell. He found himself in the gents loo peeing alongside one of the resident Royal Air Force officers. As they finish, the Air Force officer shakes twice, zips himself up, and heads for the door:
WSAO: "Excuse me. At Sandhurst they teach us to wash our hands after we have been to the toilet."
RRAFO: "Well here at Cranwell we are taught not to piss on our hands!"