They make up a non-Newtonian fluid
which is LIQUID...
The Big Bang Theory Season 2, Episode 3
Careful, Leonard. Liquid nitrogen,
320 degrees below zero.
The Big Bang Theory Season 1, Episode 5
How about a LIQUID cooler?
A little aquarium pump here.
The Big Bang Theory Season 1, Episode 2
The world's most boring LIQUID
and the world's most boring vegetable,
The Big Bang Theory Season 10, Episode 13
Well, if we had a freezer, the condensed
LIQUID would cool more quickly
Breaking Bad Season 5, Episode 14