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

Intimacy in any form
has been CHALLENGING for me,
The Big Bang Theory Season 9, Episode 11

wow, a CHALLENGING time,
to put it mildly.
Breaking Bad Season 2, Episode 10

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

Oh, we'll make the puzzles
extremely CHALLENGING
The Big Bang Theory Season 9, Episode 8