Ever forget to bring a lighter to light up your favorite smoke? Never fear, because this video shows all you weed or cigarette smokers how to light your doobie without a lighter by using the sun. The concept is easy. Just grab a magnifying glass, piece of glass, a mirror, or anything reflective and catch the sun. Aligning the sun just right on the doobie or hookah will light it on fire. This method works to start fires and light pretty much anything.