You didn't know that's what it's for

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This article lists a bunch of stuff that are on things we use and we didn't know that's what they were for, more or less. Like why we have long-neck bottles or extra buttons on jeans. I didn't get through the whole article because I got to drive my girlfriend to work and then I have to get ready and go to work and I'm running late! Bye! https://en.kueez.com/40-everyday-items-with-hidden-features-you-didnt-know-the-pu