FOUR OH-NO-YOU-DIDN'T FOUR

RFC 2616
	
	10.4.5 404 Not Found

	   The server has not found anything matching the Request-URI. No
	   indication is given of whether the condition is temporary or
	   permanent. The 410 (Gone) status code SHOULD be used if the server
	   knows, through some internally configurable mechanism, that an old
	   resource is permanently unavailable and has no forwarding address.
	   This status code is commonly used when the server does not wish to
	   reveal exactly why the request has been refused, or when no other
	   response is applicable.
		 
Dib: A Colony of horrible Rat People! Hey, do you know the way outta here?
Rat Man: There is no way out, we all got lost here too! And we've been here ever since!


Since you seem to like finding your way into and out of twisty passages...