
Oh, don't worry. He made us pinky swear
we'd keep it a SECRET.
The Big Bang Theory Season 10, Episode 20

- Is it a SECRET?
- No, it's a nitrogen laser.
The Big Bang Theory Season 6, Episode 5

Boy or girl?
Or are you two
keeping it a SECRET?
Breaking Bad Season 2, Episode 7

Again, I'm sorry,
I shouldn't have kept it a SECRET.
The Big Bang Theory Season 9, Episode 20

Hi. Okay, can you guys
keep a SECRET?
The Big Bang Theory Season 12, Episode 16