We've shown you how to wear timbs, and we've even shown you the best way to clean your penis. But somewhere in between cleaning your private parts and putting on your kicks, you're going to be putting on some underwear. While most guys are content to walk into their local big box retailer and cop a Hanes three-pack, there's a little more you should be aware of when adding new drawers to your underwear drawer. 

Whether you're looking for more support, or trying to figure out what's small clothes are going to make you look big, there's plenty of things you'd be better of knowing before you walk down the underwear aisle. Here's your guy's guide on How to Buy Underwear.