Sliced bagels? Whoever heard of such a thing? The whole concept has social media going bananas. Who in their right mind would take a classic plump bagel and turn it into glorified sliced bread? A man in St. Louis started it all with an innocent tweet. "Today I introduced my coworkers to the St. Louis secret of ordering bagels bread sliced. It was a hit!" Maybe it was in St. Louis, but not in New York, the unofficial bagel capital of the world.