When a simple situation is going down hill in a spectacular manner. Related to Epic Fail, except this is implied as the situation is happening, and ongoing. Mostly used when the situation is compounded by either random events, or lack of planning, and or human stupidity.
Our plans for meeting at the mall with our group of friends became a bohemian clusterfuck when tony decided to steal from sears, as my parents were browsing a kiosk next to us, and everyone got hungry for something different.
The gas station was the scene of the ultimate bohemian clusterfuck when the ice machine was empty, the soda fountain needed to be restocked, the hotdog cooker caught fire and the place was being robbed.