The reverse necrophilia is a sex position (usually woman is on top) in which the woman rides a guy so good, after he blows his nut, he falls into a deep slumber. The woman continues to ride, getting off on the fact he is limp, resembling a dead corpse. The woman can cum multiple times while her partner is asleep. If the man is not asleep the woman can not cum.
The word for bringing back the dead and having sex with them, often being used as a loophole in fanfictions or porn to not be associated to necrophilia.
"What porn you like bro?"
"I love necrophilian't porn."
"Ew, what the fuck? Necrophilia?"
"Nonono, its necrophiliaN'T."
"Ohhh, I get you now."