Visitor (gazing at a guinea-fowl's egg). "Waiter! Can you tell me what egg this is?"
Waiter. "Oh, sir, it's a Guernsey egg. They sometimes lays them like that. It's not done in the boiling!"
Corrected.
Lady Tourist (doing the cathedrals of Scotland). "This is Gothic, isn't it, John?"
Juvenile Vendor of "Guides" (severely). "No, mem, this is Presbyterian."