A lot of mythology originates from someone’s dad or older brother or uncle messing with them.
Let’s examine the myth that you’ll find a pot of gold at the end of a rainbow. There isn’t an end to a rainbow, someone was messing with a kid and it got passed on. It’s like sending the new kid at work to go down to the basement or go ask for a long weight.
When I worked at a pizza place it was the ‘dough patch kit’
When I worked on airplanes it was exhaust samples and the id-10-t form.
When I worked as a mechanic it was blinker fluid. When I worked as a chef it was the bucket of steam.