
Fire demon.
Sheldon's turning up the HEAT.
The Big Bang Theory Season 4, Episode 23

It was the HEAT of the moment!
The Big Bang Theory Season 5, Episode 24

It was the HEAT of the moment.
No,
The Big Bang Theory Season 5, Episode 23

Well, we'll always have the night
the HEAT went out.
The Big Bang Theory Season 3, Episode 1

That woman didn't get HEAT rash once
with me on powder patrol.
The Big Bang Theory Season 10, Episode 10