
No, SERIOUSLY, you can.
I have transient idiopathic arrhythmia.
The Big Bang Theory Season 1, Episode 6

Come on, Tim, SERIOUSLY?
Breaking Bad Season 4, Episode 3

...we need to take this very SERIOUSLY.
Breaking Bad Season 3, Episode 10

l SERIOUSLY doubt it. No.
Breaking Bad Season 4, Episode 6

Okay, are you SERIOUSLY jealous of me
working with Zack?
The Big Bang Theory Season 10, Episode 22