
A sniper. It's really SERIOUS.
Money Heist Season 3, Episode 8

You can't be SERIOUS.
The Big Bang Theory Season 7, Episode 21

The girlfriend's buying clothes for you, huh?
Sounds SERIOUS.
The Big Bang Theory Season 2, Episode 10

Serious?
Breaking Bad Season 2, Episode 5

Sounds SERIOUS. Have I been a bad boy?
The Big Bang Theory Season 10, Episode 23