Reading the “fun facts you made up” thread, I saw a few I wished were true! (or at least could see as plausible)
I can’t even read that thread. I soak up tidbits and factoids like gravy into biscuits, and I wouldn’t remember they were fake 
I would be pleased if my flies’-heads-in-the-peppercorns idea ever achieved urban legend status. But that’s not the same as wishing it were true.
I would, however, delight in the idea of tap-dancing horses.
I’ve often thought that everyone doing a little dance when a cell phone went off is a charming idea, and sometimes I do it.