
I'm not the best at reading FACIAL cues,
but I can see that you're a little turned on.
The Big Bang Theory Season 8, Episode 8

...not only about what one says, but about
FACIAL expressions, autonomic reflexes.
The Big Bang Theory Season 2, Episode 1

I could deduce by his FACIAL expression
and body language that he was sad.
The Big Bang Theory Season 10, Episode 16

...and did so
using a stern FACIAL expression.
The Big Bang Theory Season 4, Episode 24

It requires 34 FACIAL muscles
and 112 postural muscles.
The Big Bang Theory Season 4, Episode 21