We all miss one or two life lessons. Some people, like Lifehacker reader izzysanime, never learned how to blow up a balloon. It’s actually kind of tricky until you learn it! So we’ll teach you.

Start by gathering an empty water bottle, balloon, and a pushpin or scisors for later. To make sure that there is nothing wrong with the balloon, give it a test blow. Then, take the deflated balloon ...