Churchill was the proto-redditor

Stalin proposed executing 50,000 to 100,000 German officers so that Germany could not plan another war. Roosevelt, believing that Stalin was not serious, joked that “maybe 49,000 would be enough.”[17] Churchill, however, was outraged and denounced “the cold-blooded execution of soldiers who fought for their country.” He said that only war criminals should be put on trial in accordance with the Moscow Document, which he had written. He stormed out of the room but was brought back in by Stalin, who said he was joking. Churchill was glad Stalin had relented but thought that Stalin had been testing the waters.