
...someone called to WARN him.
Breaking Bad Season 3, Episode 9

Listen, before we leave,
I should WARN you...
The Big Bang Theory Season 3, Episode 12

the movie Footloose tried to WARN us,
but we wouldn't listen.
The Big Bang Theory Season 9, Episode 10

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

You said,
"I did WARN you not to trust me."
Game of Thrones Season 7, Episode 7