If you're the parent of a little one, chances are you're one of the 1 BILLION (yes, that's billion with a "b") people to have viewed the viral baby shark video on YouTube.
It turns out that it's not just parents who can't get this tune out of their heads: people everywhere are joining in on the baby shark challenge, making videos of their own and posting them online.
Of course, if you're in the dark about this phenomenon, we're happy to fuel it with the original video above.
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