If you're not careful and you noclip out of reality in the wrong areas, you'll end up in the Scratchrooms, where it's nothing but the stink of old moist carpet, the madness of mono-yellow, the endless background noise of fluorescent lights at maximum hum-buzz, doors that lead to nowhere and approximately infinite miles of randomly misremembered rooms to be trapped in. God save you if you hear something wandering around nearby, because it sure as heck has heard you...