Sounds similar to something my family recounts. We were living in Lima, Perú at the time and had friends from Switzerland or Argentina come visit us. On the way to our home someone noticed a bakery advertising black forest cake and they decided to buy one to mark the occasion.

Well, apparently that bakery had failed to consider that while salted butter may be the default form of butter in Perú, the default form of butter where the recipe was from is unsalted butter.

My parents and their guests (I was probably around 3yo at the time) ended up playing Uno. Whoever lost a round had to eat a piece of this cursed black forest cake.