In my case, you're doubly right. First, because I've never seen the word 'Zork' before, and second, because I've never heard of John DeChancie.So then when you get to the mashup stage, it's still pretty fresh. Like this:
"You are in a creepy old house, with twisty hallways and rooms that are nothing alike". Of course, the first part is a purposeful inversion of the legendary Zork wording, but what's the second influence? I know there are other "good answers" but I bet you not one of you picked John DeChancie's Castle Perilous. That kind of thing.
The creepy old house -- I've met that place in a number of disturbing dreams.