I was having a nice dinner right in the middle of England (place called Grey Lady, I think. Great food btw) when the discussion drifted toward how the U.S. president was such a 'negative' force in world affairs. Luckily I had a dinner guest to my left who was a corn fed Nebraska grown foreigner. Let him take the assault from the 10 - 12 Englanders at our table. Unfortunately, they dragged me into the conversation and they were even starting to go after Reagan now. So I was trying to figure out a way to end this conversational topic. So I used the following line.
'Well, we could start talking about Margaret Thatcher now'.
Shut them up, right in their tracks.