
Look,
there's no need to get FRUSTRATED.
The Big Bang Theory Season 3, Episode 10

Number three, to avoid getting FRUSTRATED,
we take built-in breaks
The Big Bang Theory Season 10, Episode 19

I was just FRUSTRATED because
my career is going nowhere.
The Big Bang Theory Season 7, Episode 13

- No Penny?
- Not tonight. I'm a little FRUSTRATED with her.
The Big Bang Theory Season 8, Episode 2

You don't know what it's like
to feel completely FRUSTRATED.
The Big Bang Theory Season 6, Episode 21