According to Listverse.com......
One of their lists are about Wizards Of Oz called 10 Odd and
Fasinating Facts About Wizards Of Oz.
Number seven is Suicidal munchkin. Yes. Sucidal munchkin. If you
go to any video website or see the video itself, during the scene
where Dorothy meets Tin Woodsman, where they start walking on the
yellow platform thingy, in the background, (where all the trees
are) you see something/or someone hanging or commiting suicide in
a way. ( The munchkin or whatever it is is right in the middle of
the trees)
Creepy, right?