6. Taco Bell Beefer
Long before Taco Bell decided you should ‘Think Outside the Bun,’ they tried exactly the opposite. In the 1970s they thought it would be ingenious to shove some taco meat into a hamburger bun with some cheese and veggies. Aside from it being extremely unhealthy, the loose ground beef obviously did not stay in the bun very long. Needless to say, it probably was not the best fast food item to eat while driving.