
- Just as CHALLENGING.
- Yes.
The Big Bang Theory Season 10, Episode 5

but the truth is,
Amy is just as CHALLENGING.
The Big Bang Theory Season 10, Episode 5

- Just as CHALLENGING as you?
- Yeah...
The Big Bang Theory Season 10, Episode 5

Being your girlfriend is so CHALLENGING.
The Big Bang Theory Season 8, Episode 24

I know what a CHALLENGING man he could be,
The Big Bang Theory Season 9, Episode 14