...and did so
using a stern FACIAL expression.
The Big Bang Theory Season 4, Episode 24
I could deduce by his FACIAL expression
and body language that he was sad.
The Big Bang Theory Season 10, Episode 16
I merely offer you a FACIAL expression
that suggests you've gone insane.
The Big Bang Theory Season 3, Episode 12
It requires 34 FACIAL muscles
and 112 postural muscles.
The Big Bang Theory Season 4, Episode 21
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