Tacos stand for Triangular Arizonian Crap Or Stuff. They are basically the best kind of laser you'll find around Mycatisonfiristan, though since that country is perpetually on fire, that's not really saying much. Tacos, other than that, have no real use, though you might be able to use them as bludgeons. They originated in Planet 13_37 of the Alternate Umbrella Dimension, wherupon 623 clams all ate sausage at the exact same time and started singing blue. This is why singing blue is a horrendously horrendificous way to either die or congeal in the outskirts of spacetime.