The term clungeon is a combination of the 2 words clunge, (which is a crude name for a female's Jame's Blunt) and dungeon.
It is used to describe a venue where there is often serious amounts of clunge - so much so that the walls are often dripping with the juices of this so called clunge.
A room that is so covered in empty fast foodcontainers, cum stained socks, waifu pillows, MLP characters in various jars, that even an infant would know it was occupied by a single guy in his 40's living in his mother's basement. Also a shortened version of Cum Dungeon