
Sheldon, when I said couples' COSTUME,
I meant, like, Romeo and Juliet...
The Big Bang Theory Season 6, Episode 5

Howard thought it'd be funny
to tell me it was a COSTUME party.
The Big Bang Theory Season 9, Episode 21

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

without the rest of the COSTUME.
The Big Bang Theory Season 5, Episode 19

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