
- Who would have called to WARN you?
- I don't know.
Breaking Bad Season 3, Episode 9

As your brother,
I feel it's my duty to WARN you...
Game of Thrones Season 1, Episode 1

I should WARN you,
I've had quite a bit of wine.
Game of Thrones Season 2, Episode 3

I should WARN you I have
a tongue piercing.
The Big Bang Theory Season 12, Episode 3

Great.
I just have to WARN you,
The Big Bang Theory Season 7, Episode 24