Mental Minor

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 Asylum of the Insane (1971)

The only comment at IMDB says "this is the worst motion picture I've ever seen." How churlish when this is in the glorious medium of 3D.
The film appears to be a short film which is tacked on to another film "Monsters Crash the Pajama Party." There are useful reviews at

 www.50footdvd.com/movies/m/monsters-crash-pajama.html and www.monstersfromthevault.com/DVDReviews2.html

http://www.imdb.com/title/tt0059466/
 

There is also a film called The Flesh and Blood Show (1972)  which is called Asylum of the Insane.

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