I don't think most of you realize just what is on most floors. It's true that the chances of getting infected with something are small, as they usually are, but eating food off the floor increases those odds by an order of magnitude. So, if every bite of food normally has a (numbers made up) 0.0001% chance of giving you a bacterial infection, a bite of food off the floor might be at 0.001%. Still low, but higher.