The Hound was just a PUP,
Game of Thrones Season 1, Episode 4
The wolf PUP has gone south
Game of Thrones Season 2, Episode 3
Can't believe this PUP
killed the Half hand.
Game of Thrones Season 3, Episode 1
...actively seek to nourish the same PUP.
The Big Bang Theory Season 8, Episode 23