![[SINGING] It's the eye of the tiger
It's the ear of the bat
[SINGING] It's the eye of the tiger
It's the ear of the bat](https://content2.mcqstudy.com/ss/tbbt-8-21-00:10:44.486.jpeg)
[SINGING] It's the eye of the tiger
It's the ear of the BAT
The Big Bang Theory Season 8, Episode 21

...the original Robin, Dick Grayson,
is the logical successor to the Bat Cowl.
The Big Bang Theory Season 2, Episode 20

My spare glasses are in my bedroom,
on my dresser, next to my BAT signal.
The Big Bang Theory Season 1, Episode 11

Batman is a man who dresses up like a BAT.
The Big Bang Theory Season 9, Episode 21

But what if Man-Man dressed as a BAT?
The Big Bang Theory Season 9, Episode 21