...Miriam mentions the war
Updated for the Fawlty Towers-impaired:
Basil:"Don't mention the war. I mentioned it once, but I think I got away with it. So it's all forgotten now and let's hear no more about it. Right, that's two egg mayonnaise, a prawn Goebbels, a Herman Goering and four Colditz salads....no, wait a minute...I got confused because everyone keeps mentioning the war.
German: "Will you stop mentioning the war?"
Basil: " You started it."
German: " We did not start it."
Basil: " Yes you did, you invaded Poland..."