What is Gndn?
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Acronym for "Goes Nowhere, Does Nothing". It refers to any component that does not have any function whatsoever. From "Star Trek" (the set designers labeled some pipes and conduits as "GNDN" as an inside joke).
One of the light switches is "GNDN"
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Ozzy Osbourne is the Prince of Fucking Darkness. They are one and the same.
"Don't tell me what to do,I'm the the Prince..