Wizard of Oz

Sounds like a crazy story, but it's just bogus. It's just a stagehand caught in the background. An old legend, for sure. Lots of old movies have these little gems because they didn't have the budget or technology to clean them up. Heck, the new ones have them as well. Anyhow, look closely, and you'll see some stuff in the middle of the frame as they're walking off into the distance.