...discover our weaknesses,
and report back to your ALIEN overlords.
The Big Bang Theory Season 3, Episode 15
Okay, here's a question.
As an ALIEN pretending to be human...
The Big Bang Theory Season 8, Episode 8
...and glued a big-eyed rubber ALIEN mask
to the outside of my window.
The Big Bang Theory Season 6, Episode 2
When I encountered ALIEN life, I discovered
that the key thing was not to sit in its spot.
The Big Bang Theory Season 8, Episode 21
Totally freaky, like ALIEN rats.
Breaking Bad Season 3, Episode 10