Have you ever noticed that red wine makes your tongue feel dry and puckered? If you've chalked up the strange (and slightly icky) feeling to an imaginative drunken mind, you may be surprised to learn that your tongue actually does shrivel up, thanks to chemicals in grapes called tannins. They latch onto the slippery proteins in our saliva and on our tongues and cheeks, causing them to stick together and feel like leather.

Learn more about the process (and how you can offset the unpleasant sensation) by watching MinuteEarth's video below.