The theory of the possibility of having 4 or more fathers. Such circumstances are a result of being the child of two homosexual males, who have split up and remarried, creating two pairs of homosexual partners, both tied to the child of the original two.
Mike: Not only does Andy have 4 eyes, he has 4 dads.
Lucas: Ahh, the 4 dad theory.
by 2DAD iLoch August 07, 2011

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