Shaking a popcorn bag won't get the kernels out.

The life hack: Get rid of unpopped kernels by opening a popcorn bag just wide enough to shake them out without releasing the popcorn.

Why it's bogus: If you're in no rush to eat your popcorn, the hack works. But you'll need to shake for a while to allow all the kernels to filter through the fluffier popcorn. It's probably just better to leave them at the bottom of the bag.