
It was an experiment designed
by THIS guy named Schrödinger.
The Big Bang Theory Season 2, Episode 2

I don't understand how
you're not more upset by THIS.
The Big Bang Theory Season 12, Episode 9

This thing in me.
Westworld Season 2, Episode 9

Sheldon, THIS is Leonard's decision.
The Big Bang Theory Season 3, Episode 15

you can make it through THIS."
The Big Bang Theory Season 7, Episode 11