
Okay, here's a question.
As an ALIEN pretending to be human...
The Big Bang Theory Season 8, Episode 8

...an ALIEN named Ford Prefect
pretended to be human in order to blend in...
The Big Bang Theory Season 8, Episode 8

Yeah. It's like if Alien and Predator
decided to go partners in a Jamba Juice.
The Big Bang Theory Season 4, Episode 4

Do you remember
what happened to the ALIEN...
The Big Bang Theory Season 4, Episode 21

finds proof of ALIEN life.'
The Big Bang Theory Season 12, Episode 20