
I find the CONCEPT of coitus ridiculous
and off-putting.
The Big Bang Theory Season 6, Episode 20

I didn't really understand
the CONCEPT of death, the finality of it.
Game of Thrones Season 2, Episode 9

so the CONCEPT of a bastard
doesn't exist.
Game of Thrones Season 7, Episode 4

is an abstract CONCEPT...
Game of Thrones Season 1, Episode 6

It's proof of CONCEPT.
The Big Bang Theory Season 9, Episode 24