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1950s Guy wears a white t-shirt with the year "1955" written on it, with a black vest worn over it. He wears blue jeans and a black belt.
He is seen carrying a bag of tree seeds.
1950s guy was a character who appeared in The Real Animated Adventures of Doc and Mharti. In one of the shorts, Mharti McDonhalds is flying a kite, but it unfortunately gets stuck in a tree.
Doc and Mharti travel back in time to the 1950s to prevent the tree from ever being planted. When the 1950s Guy arrives to plant the seed of the tree, Mharti licks Doc's balls. Once 1950s Guy sees this, he starts screaming in pain and eventually fades from the timeline, and is unable to plant the tree seed.
Later, Mharti starts fading from the timeline in the present day, revealing that 1950's guy must be Mharti's great grandfather.