No, wine doesn’t suddenly sprout appendages. Also called “wine tears,” wine legs are the trail on the inside of a wine glass from droplets that form after you’ve sipped or swirled and the liquid resettles to the bottom. When the alcohol on the sides of your glass starts to evaporate, water, tannins, and sugar form drops that then fall back into the glass, forming little trails. Despite the popular belief, legs are in no way a sign of the quality of a wine.