1. live under a rock - Verb
2. live under a rock - Phrase
live under a rock (third-person singular simple present lives under a rock, present participle living under a rock, simple past and past participle lived under a rock)
(figuratively) 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.
You either live under a rock or you walk in the sunshine. That's pretty much how it goes. Sixto Rodriguez