
A king MUST keep his word.
Game of Thrones Season 2, Episode 10

A man MUST ask forgiveness.
Game of Thrones Season 2, Episode 2

AMY:
I MUST say, Penny, this is great fun.
The Big Bang Theory Season 4, Episode 22

- You MUST be cold.
- Not at all.
Game of Thrones Season 5, Episode 9

but you MUST play it alone.
Westworld Season 2, Episode 2