The Cautious Twins (1960)
In this poorly animated, low-budget short, two barely-moving twins with no voices of their own show children the dangers of strangers -- all told in a manner that tries and fails to emulate Dr. Seuss.
YouTube link: http://www.youtube.com/watch?v=aEXF2SCjwkc
Drew Curlee commented
Let's extend our thanks to Trace Beaulieu and Frank Conniff for giving this short the Rifftrax treatment it deserves.
Love this! You can do this!