Top Definition
When that cheap rubber band or the staples that hold the rubber band in place on your Halloween mask break.
OMG! Everyone at the party thought I was George Bush until my mask came off.
by Ghost of Halloween past October 31, 2004
An embarassing exposure that can be blamed on clothing.
No, Janet didn't flash the world on purpose. That was a costume malfunction.


Oh, my fly's down? What a costume malfunction.
by Rachel February 03, 2004
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