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

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

in the Earth's
SURFACE.
The Big Bang Theory Season 7, Episode 3

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

...on a SURFACE located
at the farthest reaches of our cosmos.
The Big Bang Theory Season 6, Episode 5