- Fine, you win.
- Darn tooting, I win.
The Big Bang Theory Season 2, Episode 20
Hot DARN!
The Big Bang Theory Season 5, Episode 20
Oh, DARN, that's wrong!
The Big Bang Theory Season 4, Episode 5
"Darn tooting, I do.
The Big Bang Theory Season 3, Episode 16
"pretty DARN foolish right now.
I'm talking about you,
The Big Bang Theory Season 12, Episode 23