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

That's cortical FLUID.
Westworld Season 2, Episode 5

Great. Cortical FLUID.
Westworld Season 2, Episode 4

I won't last
without cortical FLUID.
Westworld Season 2, Episode 4

It's my favorite
pink FLUID,
The Big Bang Theory Season 5, Episode 23