Depending on your orientation towards novelty in fast food, March 8th will either be a secular pseudo-holiday or the latest step on the well-trodden path to apocalypse. Why? On Thursday, March 8th, 2012, Mexican fast food chain Taco Bell will finally bring its long-gestating Doritos Locos Tacos -- which subs out a normal hard corn taco shell for a folded circle of Doritos -- to restaurants across the nation.