Necromania 

A pornographic movie involving at least one living individual having sex with two or more deceased humans/animals.

Man, did you watch Necromania last night on HBO? That shit was crazy! It also made me kind of hungry...

Necromania by Wesley and Rahul May 22, 2006

Juche necromancy 

The ability of North Korean people to come back to life after reportedly been executed or died due to illness. Named after the DPRK state ideology, Juche, which is translated to "self-reliance".

Person 1: BBC reports that Kim Jong-un has disappeared from the state media and is probably dead.
Person 2: Just give it a few weeks. The power of Juche necromancy will resurrect him.

Juche necromancy by portfar September 20, 2021

Necromancer Kush

Necromancer kush, known also as «Dead man’s weed» is a variant of weed known for it’s ability to send individuals straight to the afterlife, and back to reality.

Known for its sour taste and nigh on implausible THC to CBD ratio, it is best left for the experienced druggie.

Person 1: Yo, you seen this new necromancer kush? Shit’s straight outta caelid dawg istg!

Necromancer Kush by PimpMasterYoda February 16, 2023

Necrofagia 

To have sex a dead person of the same sex as you. In other words, gay necrophilia. Can be used as a derogitory phrase to someone who is creepy as hell.

Guy 1: That guy's so creepy, he's always alone, and yesturday I saw him eat things out of the trash can! Guy 2: Wtf? Really? Guy 1: Yeah, he's so fuckin creepy. Guy 2: Hahah, he probably has necrofagia! Guy: Hahahahaha!! Yeah probably!!

Necrofagia by Xero _ Manifest January 16, 2011

necromancy 

A school of magic containing all spells that affect death. The classic uses of the term include undead, or controlling death, death spells which inflict death, and séances, communicating with the dead. However, some resurrection spells can also belong to this school because they dispel death.

A magician becomes a lich by using necromancy to prevent his or her death.

necromancy by Erefe July 27, 2007

Meme Necromancer 

We all have that one friend, who will bring up dead memes for no reason. A meme necromancer is someone who brings up dead memes trying to be funny but actually they just make a fool of themselves.

"For God Sake Tim, Damn Daniel isn't a thing anymore you Meme Necromancer"

Meme Necromancer by HappyFishSock124 January 29, 2017

Necromancer 

A magik(c) user who is devoted to the study of life and death and specialises in spells and incantations to with people both alive and dead.

Necromancer by Ozzy July 9, 2003