
SHELDON:
Although, on one OCCASION...
The Big Bang Theory Season 4, Episode 3

to celebrate the OCCASION
that we both can enjoy.
The Big Bang Theory Season 7, Episode 15

Really? What was
the OCCASION?
The Big Bang Theory Season 12, Episode 5

Oh, neat. What's the OCCASION?
The Big Bang Theory Season 1, Episode 13

Mm. This is great, what's the OCCASION?
The Big Bang Theory Season 6, Episode 1