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

Space is the MIRROR of the soul.
The Big Bang Theory Season 11, Episode 14

Oh, please, look in the MIRROR,
The Big Bang Theory Season 10, Episode 16

along with the slight concavity
of the MIRROR
The Big Bang Theory Season 10, Episode 16

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