I'm SERIOUS,
JPL's actually developing a robot arm
The Big Bang Theory Season 10, Episode 7
I thought you'd come here
with a SERIOUS purpose.
Vikings Season 1, Episode 9
Sounds SERIOUS. Have I been a bad boy?
The Big Bang Theory Season 10, Episode 23
If you'’re not
SERIOUS about this,
The Big Bang Theory Season 12, Episode 3
No, I'm SERIOUS.
The Big Bang Theory Season 11, Episode 11