A revenge tactic in while a male tricks female into stand/holding a bent over doggy-style position. Then proceeds to run full bore towards ramming his hammercock into her vagina/anus thus impaling her and exacting revenge. Can also be applied to oral impaling.
"That hoe cheated on me so I hammercocked her ass!"
"My stupid teacher gave me a bad grade on my test so I hammercocked her mouth."
"Shut up or I'm going to hammercock your mouth!!"
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