Another word for shithole, pig sty, or a messy room.
An unpleasant place to be... due to being so filthy.
Can be filled with trash, feces, maggots, flies, and rats.
Clyde: "I'm getting tired of this shittang. I'm leaving."
Nellie: "Jimmy, quit masturbating and clean out this damn shittang!!"
The worst kind of description that you can utter when the normal words like shit, terrible, dire, abomination, disgusting, dreadful and horrendous just don't cut it.
It is a culmination of these all these words and used to describe the worst and only the worst situations when the words that are the normal go to seem to downplay the severity that you are trying to express.