Sell By Date”, “Use By Date”, “Best Before Date”, “Expiration Date”. I am so confused!!! Did you know that stores can sell food after the date expires? Thank goodness some states require milk to be sold by the expiration date! There is nothing worse than pouring yourself a glass of milk and you got it—it is sour! Milk is not the only thing that sours, people do as well. Did you know that you have a “shelf life”? Your shelf life is defined as the period during which you remain effective a...