coffinpost 

A on online post about someone's sexual intrusive thoughts. These posts are usually long and contain detailed sentences of explicit, often taboo, sexual material. Coffinposts are often posted on Tumblr but can be posted anywhere.

Girl: I keep seeing coffinposts on the nsfw tags on tumblr.
Guy: Yeah, they're pretty gross aren't they?

coffinpost by arc777 December 25, 2021

Coffinmouth 

The almost inevitable consequence of a Seattle speedball. It's the noxious combination of cottonmouth and coffee breath that's foul enough to wake the dead (which, coincidentally, is what people nearby might think you're trying to do).

My boyfriend tried to kiss me this morning after taking a Seattle speedball, but his coffinmouth made me feel like I was being tongue-punched by a stoned zombie; Crest, or holy water, are recommended solutions.

Coffinmouth by Penguigeon October 15, 2014

Coffinist 

Preparing dead bodies for the funeral. A male Coffinist is a Coffinator. Much like a mortician.

She looks just like she did when she was alive, the Coffinist did a good job.

Coffinist by Christine D; Emily S December 10, 2010

coffinstalker 

A sex predator who pursues encounters with a near dead terminally ill person to satisfy a peverse desire.

We've had an applicant for our voluntary position in this retirement care home: his name is Darren. Shall we invite him in for an interview? No, I'm afraid we cannot accept him because he's a well known coffinstalker.

coffinstalker by Stainie March 29, 2010