
Fine, if that's what it takes
to show you that I'm SERIOUS.
The Big Bang Theory Season 12, Episode 2

It's usually not SERIOUS,
but it can produce a cough like that.
Breaking Bad Season 2, Episode 9

Wait a minute. This isn't flirting.
You're SERIOUS.
The Big Bang Theory Season 2, Episode 12

I'm SERIOUS.
The Big Bang Theory Season 7, Episode 12

I'm SERIOUS. I've always had these plans.
I was gonna be in movies...
The Big Bang Theory Season 6, Episode 21