Necrophilia

Necrophilia is the practice of having sex with a corpse. It's sick. It's twisted. It's totally bat-shit crazy, but hey... it actually happens from time to time. Throwing in the metaphysical components to it, one could say that having sex with a vampire (who is technically undead) may also constitute necrophilia. Yes, Twilight fans, Bella Swan is committing an act of gross necrophilia every time she bumps uglies with Edward Cullen.

In most locales, the act of necrophilia is generally considered unlawful. The punishment for such a deed varies based on location. In the United States it can range from a Class A misdemeanor to a Class D felony. Either way, no matter how you slice it, buggering a corpse is just low-class.

In film

 * Freddy vs. Jason: In Jason Voorhees' dream, he spies Freddy Krueger fornicating with the corpse of a female camp counselor in the 1957 flashback sequence.
 * Halloween II: Coroner Gary Scott had a conversation with his partner Alan Hooks about what it might be like to have sex with a corpse. Hooks put an end to the conversation when it turned toward speculation regarding the death of the sheriff's daughter, Annie Brackett.