Black lightsaber

Black lightsabers are lightsabers with black blades. These were designed by emo Padawans who thought that since black was cool, that it would make for a cool-looking blade. These Padawans have never seen a black light before and failed basic elementary science classes as everyone knows that black does not emit light.

The black lightsabers and similar paraphernalia were popular with the sub-adult segment of the population. They claimed that black crystals produced the black light, despite the fact that such a thing was not only impossible, as black absorbs light, but also a very stupid concept. The black lightsaber fad quickly died down as the educated Jedi taught their elementary school dropouts basic physics.

Unfortunately, there are still black lightsabers lost within the myriad of races and fandoms, thus becoming a reminder of just how stupid emo people can be when not properly educated and left to their own devices.