
See, this is why I wanted
to have a COSTUME meeting.
The Big Bang Theory Season 1, Episode 6

She may have heard about
my cool Dumbledore COSTUME.
The Big Bang Theory Season 10, Episode 17

Okay? Any COSTUME you want.
The Big Bang Theory Season 1, Episode 6

Hey, why aren't you
in your COSTUME?
The Big Bang Theory Season 12, Episode 6

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