Amazingly, one of the most misunderstood items that can be bought at your local convince store. The actual item can be used for art forms, awesome dance moves, or a helpful survival item in the dark. The most common kind is made of a 5-6 inch tube made of frosted plastic, containing a smaller glass tube inside, each containing a separate chemical. You "crack" open the class tube on the inside of the plastic when you bend the glowstick, causing the chemicals to react within the tube, casting a glow of color that can last anywhere up to 6 hours to 10 hours. Also comes in a long, tubular type casing that when cracked, can be used as a bracelet or necklace.
Commonly seen in a rave or party type setting, the glowstick is sadly associated with drugs such as LSD, that alter your perception and cause an otherwise common glowstick to seem "fuzzy" or seem like it leaves paths in the air. While glowsticks can and are used for this reason at some raves and some parties, there are those that use glowsticks for art styles and for common entertainment, along with an emergency light source should all power suddenly go out and every battery in the house be rendered useless. Also just a fun thing to have around the house, because they commonly cause bouts of staring at the addictive glowing lights.
Paul: Yeah, I got like a box full of glowsticks in my closet in case we get bored and want to glowstick a bit.
John: GLOWSTICKS?!? Druggie....