One time my brothers
made me breathe HELIUM.
The Big Bang Theory Season 12, Episode 6
You and Sheldon already came up
with your superfluid HELIUM model.
The Big Bang Theory Season 9, Episode 16
Be even better if he swapped out
the HELIUM for xenon.
The Big Bang Theory Season 11, Episode 8
I'm not seeing anyone
using liquid HELIUM vortices like this.
The Big Bang Theory Season 9, Episode 16