
...since this is our first Halloween
party as boyfriend and girlfriend...
The Big Bang Theory Season 6, Episode 5

You know, like how I practiced
for that Halloween haunted house
The Big Bang Theory Season 10, Episode 6

Except the Halloween costume
The Big Bang Theory Season 7, Episode 2

Um, yeah, Halloween.
The Big Bang Theory Season 1, Episode 6

I see you're getting ready
for your Halloween party.
The Big Bang Theory Season 6, Episode 5