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A baby that is the result of a sperm donor. For one reason or another, the mother decided to become pregnant via sperm donor and have a baby that way. Not that big of a deal because a real dad is a man who's there to raise and love his child, even if his child isn't genetically related to him.
Simon: Hey you and your dad look nothing alike
Frida: Yeah that's because he's not my real dad, I'm a donor baby.
by tinabonina December 05, 2009
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