
Erase the hard drives, grab the tapes, wipe
our fingerprints off every SURFACE and run.
The Big Bang Theory Season 2, Episode 8

Then a laser will map
the reflective SURFACE...
The Big Bang Theory Season 6, Episode 5

that's just a doodle of
a hyperelliptic Riemann SURFACE.
The Big Bang Theory Season 7, Episode 20

...as the SURFACE of
an n-dimensional superfluid.
The Big Bang Theory Season 8, Episode 23

or under the icy SURFACE
of Europa?
The Big Bang Theory Season 11, Episode 10