Chances are, if you’re a man of a certain age, you’ve probably used a condom. You may even think you are a veritable prophylactic expert, having employed said penis-wrapping devices on multiple occasions with an assortment of partners. Indeed, condoms are the most widely available form of birth control in the world, so it stands to reason that folks generally assume they can use them correctly. Unfortunately that isn’t always the case: While you may believe that putting on a condom is self-explanatory, there are numerous mistakes that you might never have considered. With those egregious errors in mind, we’ve put together a list of common condom faux pas to help you avoid STIs, unwanted pregnancies, and—at the very least—embarrassment in the bedroom. After all, condoms are one thing you most certainly do not want to be doing wrong.