If a snapping turtle bites you, it won't let go until it hears thunder.
When it is raining and the sun is shining, the Devil is beating his wife.
Warts are caused by a toad or frog peeing on you.
If you try to kill a snake, it won't die until sundown.
[There are all sorts of social and political myths I was taught, too, and you can probably guess what they were. Unfortunately those are the ones that many people still believe.]