Jonny Buchardt tricking his audience of mostly middle-aged Germans into saying something they should not have said, 1973.
Given the average age of Buchardt's audience, their response was likely ingrained in their muscle memory since the 1930s and 1940s.
Though this trick and the use of a N@zi-style salute caused a minor scandal due to the anti-N@zi laws and general taboo of N@zism in Germany, Buchardt was not arrested or punished in any way. This video was recorded during the annual Cologne Carnival festivities held each year in the city.