
Yes, it's DARK as a dungeon
Way down in the mines
The Big Bang Theory Season 8, Episode 6

You go on Space Mountain,
you're in the DARK, she's holding onto you.
The Big Bang Theory Season 6, Episode 18

Most importantly,
this will let you move on and study DARK matter.
The Big Bang Theory Season 8, Episode 2

Does she have DARK hair?
The Big Bang Theory Season 7, Episode 21

For the night is DARK and full of terrors.
Game of Thrones Season 2, Episode 1