I remember an author with a book on such matters. Art Bell's Show of course. Anyway, I remembered she did the bios of Rice and Koontz. So, looking that up:
Katherine M. Ramsland
Cemetery Stories: Haunted Graveyards, Embalming Secrets, and the Life of a Corpse after Death
The story that I recall is that there is a group of morticians that send out the call when a good-looking
corpse comes in to one of them. Yes, the receiving mortician throws a party for corpse and fellow devotees.
Yes, but can dead people still have sex with each other? We should go to Beverly Hills and find out.