
That's a MIRROR.
The Big Bang Theory Season 7, Episode 12

take a long, hard look
in the MIRROR,
The Big Bang Theory Season 11, Episode 8

Oh, and a MIRROR on a stick...
The Big Bang Theory Season 8, Episode 19

Black Mirror?
No.
The Big Bang Theory Season 12, Episode 13

Now imagine there was never
a MIRROR to begin with.
The Big Bang Theory Season 12, Episode 16