It stays CLOSED. That's an order.
Breaking Bad Season 3, Episode 10
A girl keeps her mouth CLOSED.
Game of Thrones Season 2, Episode 5
'cause it's CLOSED.
The Big Bang Theory Season 9, Episode 11
Open, CLOSED.
The Big Bang Theory Season 12, Episode 19
She understood everything I said.
Case CLOSED.
The Big Bang Theory Season 4, Episode 18