Apparently “Works Bombs,” a plastic bottle filled with Drano and tin foil which creates an explosive reaction, have been around for a while but was recently verified on Snopes, with several incidents reported recently.
The amount of force that is generated at the time of the explosion is enough to severe fingers and also deliver 2nd and 3rd degree chemical burns to the victim. The chemicals can possibly cause blindness and the toxic fumes can be harmful.
I am usually completely ignorant of these things, so I’m assuming that “TRUE” on Snopes.com is good enough verification. For some reason Mrs Cool and I felt this was something that we could see happening in Sacramento, though that’s just sort of a vibe more than anything; I can’t think of any recent incidents of this sort of Violent Mayhem.