Hell's Asshole 

In the book in the shadow trilogy Hell's Asshole was the name for the pit they put the worst of the worst in. There was a hole in the botttom that sounded like it shrieked and wailed it also smelled of sulphur. Hence Hell's asshole.

Civi 1: Did you here about that pedo?
Civi 2: The one that got sent to Hell's asshole?
Civi 1: Yeah, that's the one.

Hell's Asshole by Eladriin May 25, 2013

Hell's Asshole Syndrome 

Another definition for irritable bowel syndrome

-Hey , isnt mike supposed to come with us to the cinema ?
-He's experiencing hell's asshole syndrome , i dont think he can go outside this week

Hell's Asshole Syndrome by A Man Who Takes Life Serious June 5, 2016