
- How'd you do that?
- No idea, BUT I did it!
The Big Bang Theory Season 8, Episode 22

But why?
The Big Bang Theory Season 7, Episode 18

BUT we'll be the judge of that.
Game of Thrones Season 3, Episode 6

And normally I wouldn't, BUT I saw
an aggressive looking girl scout and...
The Big Bang Theory Season 9, Episode 20

It's usually not serious,
BUT it can produce a cough like that.
Breaking Bad Season 2, Episode 9