Imagine hell, now try to imagine SuperHell.
You can't, because anything you can perceive is still normal hell, so stop trying. The giant boiling vat of lemon juice, razor blades, sharks and jellyfish STILL won't cut it for SUPERHELL.
Also can be used to describe a situation with no positive outcome/escape
1: even if you added flamethrowers and lasers to the above mix, you still wouldn't have Superhell.
2: Man, i smell like beer & weed, its 4am, my car is stuck in a ditch, and i missed my wife's birthday...This sure is Superhell. even though its not