Bad Beef
Americans eat 50 billion burgers each year. That averages out to about three per person each week, according to the USDA. Some of them are bound to be terrible.
We shouldn't have to put up with hockey puck beef, crumbling buns, and paper-thin tomato slices, but we've all experienced them. If you want to avoid that horrible fate, it's probably best to steer clear of these national burger chains, which aren't exactly known for their high-quality offerings. (While you're at it, avoid these pizza chains, too.)