Not so much a movie goof, but an urban legend....
That scene in the Wizard of Oz where Dorothy, Tin Man and Scarecrow march off down the yellow brick road?
There's that myth that in the background a munchkin is hanging himself.
how stupid.
When I was a kid, it was a given that you'd watch the Wizard of Oz every year (kinda like a Charlie Brown Christmas). This was years and years before I heard of the munchkin story. I noticied something weird moving in the background, but it happened so fast.
So, next year, obsessive compulsive child that I was, I glued myself in front of the TV and watched with a eagle eye.
Before the shot in question, I noticed birds like herons or cranes in the background. When the trio started skipping down the path, it was obvious, even to a little kid, it was a crane that flapped his wings right then.
Here's an
8 second clip.
People say it's a munchin swinging out, but I have no idea how you can see that.