When you're under stress as a human being, you behave oddly and your relationships with people become strained.
What is it with McDonald's staff who pretend they don't understand you unless you insert the 'Mc' before the item you're ordering? It has to be a McChicken burger. . . a chicken burger gets blank looks. Well, I'll have a McStraw and jam it into your McEyes, you f**cking McTosser!