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A character flaw of pride, in which a individual will take unnecessary risks or do dangerous acts if their courage is questioned, such as being called a chicken or a coward.

Marty McFly in Back To The Future
Jim Stark in Rebel Without a Cause
Jim said that he won't enter the race because he was afraid of getting hurt, but then Tim called him a coward and he had to prove him wrong because of his Marty McFly Complex
by TheArtNouveauGirl February 25, 2009
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