When I ask them a simple question and they answer with at least ten-sentences-long answer.
Jes, I do it too.
That eggs are made in factories. I still haven't made peace with this, and lurk around egg equivalents (I'm not vegan).
Also when I was in kindergarden, I had terrible idea about how the map of our village looks like.
Is it enforced? And... why?
Also when the leap years were introduced, the priests (who were to take care of the calendar) didn't understand what dis "every four years" mean, and used to put a leap year every three years.
TIL How to Train Your Dragon is originally a book. Thank you.
Australia and Oceania
North America
Europe
In czech, we have a phrase "jak sa kráje chleba" (same way as a bread is sliced). Problem is, that (at least in my social group) nobody knows, wether it means clockwise or anticlockwise, as everybody slices the bread differently.
Besides the current version, I like proposals no. 2, 20 and 34 (but the last one is too similar to the Estonian flag).
Once I met a Slovak guy with clearly polish surname, so I asked him wether he had polish ancestors. He genuinely didn't get why would I think something like that...
The calendar on Earth must be boring. Only one moon!