Take a trip back to a throwback trend that had classrooms, kitchens, and even sports benches filled with the sound of flip… thud… cheers! The bottle flip challenge may look simple, but there’s a reason it took over the internet—and stuck around long after 2016.

In this episode, we break down how the trend went viral, why it was so fun (and sometimes a little annoying for adults), and the surprising science behind landing the perfect flip. Plus, what makes trends like this so satisfying that you just have to try “one more time.”

So… that’s why everyone was flipping bottles!

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