
Do you remember that CAVE?
Game of Thrones Season 4, Episode 9

Everyone hates the CAVE people.
Game of Thrones Season 3, Episode 2

to live in the Stone Age
and a CAVE wasn't available.
The Big Bang Theory Season 7, Episode 11

It's not safe outside the CAVE.
Game of Thrones Season 6, Episode 2

Somewhere between tool using
and CAVE painting...
The Big Bang Theory Season 1, Episode 11