
l'm saying,
where's the CHALLENGE?
Breaking Bad Season 4, Episode 2

That's it. The Sheldon Cooper
Girlfriend Challenge is officially live.
The Big Bang Theory Season 9, Episode 8

Challenge accepted.
The Big Bang Theory Season 1, Episode 2

Really give ourselves a CHALLENGE.
The Big Bang Theory Season 8, Episode 3

Challenge them again.
The Big Bang Theory Season 10, Episode 22