Scottish-Americans tell you that if you want to identify tartans, it's easy - you simply look under the kilt, and if it's a quarter-pounder, you know it's a McDonald's.
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!