
Ooh, look, a new Batman belt buckle.
The Big Bang Theory Season 2, Episode 20

How about a Batman
squirt gun?
The Big Bang Theory Season 7, Episode 2

For the last time, no Hulk,
no Batman, no life-size statues.
The Big Bang Theory Season 10, Episode 18

But that doesn't prove
I know Batman.
The Big Bang Theory Season 4, Episode 7

Which I've now just told to Batman.
See, I cannot keep a secret.
The Big Bang Theory Season 4, Episode 6