of virtual particles
in a VACUUM,
The Big Bang Theory Season 5, Episode 23
[VACUUM WHlRRlNG]
Breaking Bad Season 4, Episode 8
...due to quantum VACUUM fluctuation?"
The Big Bang Theory Season 1, Episode 13
or VACUUM cleaner salesman,
or bootblack.
The Big Bang Theory Season 5, Episode 6
Vacuum tube amp,
which is, by far, the best,
anti-distortion-wise.
Breaking Bad Season 4, Episode 2