
I know I'm gonna REGRET this,
but what trauma?
The Big Bang Theory Season 1, Episode 16

Hey, you rock.
Thank you. Thank you.
You won't REGRET this.
Breaking Bad Season 2, Episode 5

And now I REGRET it.
The Big Bang Theory Season 11, Episode 17

I REGRET not saying "yes"
when you asked me to marry you.
The Big Bang Theory Season 7, Episode 22

...so too I REGRET my participation
in what was...
The Big Bang Theory Season 1, Episode 2