1.VerbTo live in isolation: to live hermetically (especially, hermitically); thus, to be unaware of or be oblivious to common knowledge; to be isolated from knowledge of current events.
"Of course I know about Looney Tunes, SpongeBob SquarePants, and The Simpsons. I do not live under a rock."
2.VerbUsed other than figuratively or idiomatically: see live, under, rock.
"Eventually their misanthropy got so bad that they built a ferroconcrete underground home in the farthest boondocks of North Dakota so that they could literally live under a rock."