
Now, remember, a Vandyke
is a goatee without a MUSTACHE.
The Big Bang Theory Season 2, Episode 23

Just FYI, don't try to go back
with a fake MUSTACHE.
The Big Bang Theory Season 4, Episode 5

- It is extracted from the plant...
- Hey, I'm thinking of growing a MUSTACHE.
The Big Bang Theory Season 2, Episode 13

that have my face with
a MUSTACHE and a Spanish name
The Big Bang Theory Season 7, Episode 17

Mustache is looking good
there, Sheldon.
The Big Bang Theory Season 5, Episode 4