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Martinelli’s apple juice is going viral on TikTok for the strangest reason. Biting into the short, stout bottles of juice apparently makes the same sound as biting into a super crunchy apple. The trend has been around since 2015 at least when it first gained minor popularity on YouTube. However, that attention doesn’t compare to the widespread nature of the trend on TikTok, where videos of users biting into the apple-like juice bottles have hundreds of thousands of likes. Many comments debate whether the trick actually works. Spoiler alert: It really does. The plastic that makes up Martinelli’s apple juice bottles has a little give to it, allowing it to bend slightly to your bite.  The bottle is also imprinted with product information instead of having a label. The combination of these two product characteristics is what likely makes the trick work, though it’s doubtful the brand intended to make an apple-sounding crunch with their bottles. A TikTok user named @iconiccpinkk also posted a video cutting open a bottle of Martinelli’s pointing out it appears to be made of three layers of thin plastic. She suggests the plastic layers rubbing together makes the sound. If you want to try the weird trend for yourself, Martinelli’s apple juice is still available on Amazon — with a slight up-charge, due to the viral popularity. Plus the apple juice is actually widely beloved as being pretty dang delicious. Just make sure you don’t buy the similar-looking glass bottles. No one wants to bite into glass