I was going to make this about Southern slang but most of the people I know aren’t in the South. I’ll start with the type of thing I’m looking for (this is just for fun.)
Slang: Galnipper. Derivative of Gallinipper, a giant mosquito that inflicts huge painful bites. Typical for Southern slang, a galnipper is at least partially the opposite of the real word. What we call a galnipper is a crane fly. It does look like a giant mosquito, but it doesn’t bite and actually eats mosquitoes. We don’t kill them. We leave them in the house, or relocate them outside if our STUPID CATS are stalking them.