Sleeping baby's reaction proves 'Gangnam Style' is basic instinct

We already know that the addictive dance beat and power synth grooves of "Gangnam Style" are like audio candy to humans, robots and birds, but, as this telling video demonstrates, the song's wild popularity may be due to a basic, instinctual booty-shaking response. This baby, previously in a deep sleep, rather unsettlingly snaps into a bug-eyed, dancing spasm at the first notes of the song, like a hypnosis show volunteer. Her sister, of course, finds this hilarious, foreshadowing untold years of late-night, "Gangnam Style"-related practical jokes.

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