In the show, set in 1985, Jan Böhmermann makes a joke about the Diddlmaus, but this product character existed only in 1990, 5 years after the episode is set, and in 1991 it was sold for the first time. This is clearly intentional or improvised as after that Jan Köppen asks if it exists in the 80s and Böhmermann replied "I don't have a clue".