In this video, we learn how to cheat on a test or exam with a light. To do this, you're going to need a small hand held black light and a pen that writes in white. After you have these materials, you will write out the answers and information that you need onto a blank piece of paper with the pen. After you have everything written out, shine the small black light onto the paper. Now you should be able to see the writing as clear as day! Use this on a test and nobody will know you have all the answers, it's invisible to the naked eye!