Uh...crackheads do not use spark porcelin to smoke crack. They prefer larger diameter glass for that activity. Have you ever seen those stupid minature roses in the glass tubes at a gas station? Classic crack-pipe. What these idiots do use sparkplug porcelin for is breaking out car windows. They thread some string through the small hole and then swing the porcelin at your window. Its better than a commercial window punch and nearly silent. Most times, it does not cause enough vibration to set off a car alarm, so shitheads are able to reach in and take whatever they want. Nice to know huh.....