
...against your Flash 123,
the classic "Flash of Two Worlds" issue.
The Big Bang Theory Season 3, Episode 2

It's on the Batman FLASH drive
on your key chain.
The Big Bang Theory Season 11, Episode 9

...against your Flash 123,
the classic "Flash of Two Worlds" issue.
The Big Bang Theory Season 3, Episode 2

You know what? Flash your lights,
let him know it's you.
The Big Bang Theory Season 9, Episode 24

Do you think I should start
watching The Flash TV show?
The Big Bang Theory Season 8, Episode 24