Top Definition
When the dead come alive just to have an orgasm after someone has mad, hot, crazy sex with their corpse.
Person 1: "I had a necrophiligasm with your mom last night."

Person 2: "But my mother is dead!"

Person 1: "I know, she came alive, had an orgasm, had a heartattack and died again."
by baldkid May 18, 2010

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