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.
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?
The most detructive fuck move ever created.Used to either put someone in a coffin or debase them after they are already in it;1000 times the payload of a conventional skull fuck, usually employed after you have been fucked down.