All right, we've defeated the first CHALLENGE.
The Big Bang Theory Season 8, Episode 19
You want a real CHALLENGE,
try keeping me from eating more of these.
The Big Bang Theory Season 10, Episode 22
Challenge accepted.
The Big Bang Theory Season 1, Episode 2
I have no doubt
you will prove equal to this CHALLENGE.
Game of Thrones Season 3, Episode 3
Maybe since you're so good,
he's taking his time to meet the CHALLENGE.
The Big Bang Theory Season 6, Episode 6