Open a Halloween edit with a door knocking sound, then bring this in as the door opens and the costume appears. After the reveal, add a Dramatic Dun Dun Dun for a second beat before the main joke lands.
Über diesen Sound
This short 8-second clip plays the Addams Family intro theme, a bouncy tune carried by snapping fingers. It feels mischievous and campy rather than frightening, like a wink at something spooky. It comes from the opening music of the original 1964 television series, written by Vic Mizzy.