It's like me CHALLENGING you
to a sexy pants contest.
The Big Bang Theory Season 8, Episode 19
...indicating he's CHALLENGING
the ruling on the field.
The Big Bang Theory Season 3, Episode 6
"The CHALLENGING
climate of Scandinavia
The Big Bang Theory Season 12, Episode 23
Oh, we'll make the puzzles
extremely CHALLENGING
The Big Bang Theory Season 9, Episode 8
- Just as CHALLENGING as you?
- Yeah...
The Big Bang Theory Season 10, Episode 5