Fear is USEFUL that way.
Game of Thrones Season 5, Episode 2
And if he's USEFUL,
good. If not, throw him off the Wall.
Game of Thrones Season 3, Episode 3
but may be USEFUL as pig feed.
Game of Thrones Season 3, Episode 3
You might find a bit of armor quite USEFUL
Game of Thrones Season 3, Episode 1
The officers will be USEFUL.
Game of Thrones Season 2, Episode 4