Challenge accepted! Sounds like it's time
for the Sheldon Cooper Apology Tour!
The Big Bang Theory Season 9, Episode 13
We accept your CHALLENGE.
Name a time and place.
The Big Bang Theory Season 2, Episode 12
Some boys like a CHALLENGE.
Game of Thrones Season 2, Episode 10
That's it. The Sheldon Cooper
Girlfriend Challenge is officially live.
The Big Bang Theory Season 9, Episode 8
Maybe since you're so good,
he's taking his time to meet the CHALLENGE.
The Big Bang Theory Season 6, Episode 6