
- 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

"The CHALLENGING
climate of Scandinavia
The Big Bang Theory Season 12, Episode 23

Not CHALLENGING?
I was humiliating the man.
The Big Bang Theory Season 6, Episode 6

It's like me CHALLENGING you
to a sexy pants contest.
The Big Bang Theory Season 8, Episode 19