
Or normal words
followed by a charming SMILE.
The Big Bang Theory Season 7, Episode 19

Uh... A SMILE means something different
in my country.
The Big Bang Theory Season 4, Episode 20

Smile.
The Big Bang Theory Season 11, Episode 16

Smile!
The Big Bang Theory Season 11, Episode 9

SMILE.
The Big Bang Theory Season 7, Episode 4