
it was an unnecessary CHALLENGE
to our heterosexuality.
The Big Bang Theory Season 5, Episode 17

I CHALLENGE you to find a single reference
to Kryptonian skin cells.
The Big Bang Theory Season 1, Episode 2

Challenge accepted! Sounds like it's time
for the Sheldon Cooper Apology Tour!
The Big Bang Theory Season 9, Episode 13

I have no doubt
you will prove equal to this CHALLENGE.
Game of Thrones Season 3, Episode 3

There would be greater shame
in accepting a CHALLENGE from a criminal.
Vikings Season 1, Episode 6