
How about a LIQUID cooler?
A little aquarium pump here.
The Big Bang Theory Season 1, Episode 2

They make up a non-Newtonian fluid
which is LIQUID...
The Big Bang Theory Season 2, Episode 3

It's like a waterfall
of LIQUID gold.
The Big Bang Theory Season 5, Episode 1

Floating in a warm pool
of LIQUID
The Big Bang Theory Season 12, Episode 19

MRS. WOLOWITZ: Holy Moses,
how much LIQUID can be in one tuchus?
The Big Bang Theory Season 4, Episode 5