
Kandorian dry-cl...? I give up. You can't have
a RATIONAL argument with this man.
The Big Bang Theory Season 2, Episode 11

Yes, it's what a RATIONAL person does
when his entire life's work is invalidated...
The Big Bang Theory Season 1, Episode 12

No RATIONAL person would do
as you have done.
Breaking Bad Season 3, Episode 13

but Sheldon being A
RATIONAL, thoughtful person?
The Big Bang Theory Season 11, Episode 14

to restore order
and RATIONAL leadership.
Game of Thrones Season 7, Episode 3