Groundskeeper Willie: It won't last! Brothers and sisters are natural enemies! Like Englishmen and Scots! Or Welsh and Scots! Or Japanese and Scots! Or Scots and other Scots! Damn Scots! They ruined Scotland!
Principal Skinner:You Scots sure are a contentious people.
Groundskeeper Willie: [Bangs on Skinner's desk] You just made yourself an enemy for life!
—The Simpsons