![It really doesn't matter
as long as it's challenging.
It really doesn't matter
as long as it's challenging.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
It really doesn't matter
as long as it's CHALLENGING.
The Big Bang Theory Season 10, Episode 22
![- Just as challenging as you?
- Yeah...
- Just as challenging as you?
- Yeah...](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
- Just as CHALLENGING as you?
- Yeah...
The Big Bang Theory Season 10, Episode 5
![Oh, we'll make the puzzles
extremely challenging
Oh, we'll make the puzzles
extremely challenging](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Oh, we'll make the puzzles
extremely CHALLENGING
The Big Bang Theory Season 9, Episode 8
![but the truth is,
Amy is just as challenging.
but the truth is,
Amy is just as challenging.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
but the truth is,
Amy is just as CHALLENGING.
The Big Bang Theory Season 10, Episode 5
![wow, a challenging time,
to put it mildly.
wow, a challenging time,
to put it mildly.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
wow, a CHALLENGING time,
to put it mildly.
Breaking Bad Season 2, Episode 10