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Someone who donates way more than their share to a sperm bank just so they can integrate their genes into as many artificially inseminated babies as possible.
Person 1: "I go to the sperm bank twice every week so I can spread my DNA over as many babies as possible to create an army of little me's!"

Person 2: "Dude, quit being such a sperm bank whore! No one wants your ugly genes polluting their babies!"
by Ikurasake Gerigenion January 26, 2008