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Celebrating Halloween is not confined to wearing the scariest costumes or the goriest attire that will scare everybody. Comical, funny, humorous, hilarious, knee-slapping and side-splitting costumes are also in! Halloween is the best time for everyone to simply let go of their inhibitions, as well as their dignity. Laughter’s the best medicine, so if you can, make someone smile. Make the party fun and exciting. These 25 funniest Halloween costumes will surely lighten up the party.