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There are few things more awesome than a perfectly-timed photo that captures people doing something amazing. A diver as he's about to breach the water's surface. A boxer right as she lands that knock-out punch on an opponent. The look on your dog's face right when you drop a bunch of tennis balls on the ground - you get the idea.
But sometimes perfectly-timed photos don't just capture amazing moments; they yield some hilarious and baffling results.
Like optical illusions that leave us scratching our heads.
Twitter user @_ellebailey uploaded this hysterical photo of her sister who went out clubbing and apparently grew an enormous arm.
