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A person who stores up grudges and occasionally discharges them with a vengeance, much as a capacitor stores an electrical charge. Coined, as far as Google knows, on July 17, 2012 by Zandar
You have to watch it when he seems mellow and taking it in stride. He's a douchecapacitor, and one day, he'll zap you.
by Mr. Edwina July 17, 2012
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