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There's a horror short I can't recall the source. It could have been Outer Limits, it could have been Tales from the Crypt; pretty sur eit's a short or anthology piece.
What happens is that there's a doctor in a wheelchair who is married. This buff surfer guy shows up and starts having an affair with his wife. The doctor tricks the surfer guy into killing himself, and then reanimates the headless body. However,t he headless body continues to screw his wife. When he goes to kill the headless body, it chokes him to death. In the end, his wife put the doctor's head on the surfer dude's body.