
All right, try thinking about THIS.
The Big Bang Theory Season 4, Episode 20

BERNADETTE: Ooh, look at THIS
pretty purple robe I just got.
The Big Bang Theory Season 5, Episode 19

Did Leonard know about THIS?
The Big Bang Theory Season 3, Episode 1

(CHUCKLING) What is THIS?
The Big Bang Theory Season 10, Episode 8

Howie, THIS is just your hypochondria.
The Big Bang Theory Season 9, Episode 15