
I know. I may have started off
with a FAIRLY obvious one.
The Big Bang Theory Season 2, Episode 13

That seems FAIRLY conclusive.
The Big Bang Theory Season 4, Episode 7

All right.
Leonard FAIRLY calls the question:
The Big Bang Theory Season 2, Episode 14

Although that number
would be FAIRLY easy to calculate.
The Big Bang Theory Season 4, Episode 1

Um, it's FAIRLY technical.
The Big Bang Theory Season 4, Episode 21