Customary culture is remembered enactment, i.e. re-enactment. It is the patterns of expected behavior within a group, the "traditional and expected way of doing things" A custom can be a single gesture, such as thumbs down or a handshake. It can also be a complex interaction of multiple folk customs and artifacts as seen in a child's birthday party, including verbal lore (Happy Birthday song), material lore (presents and a birthday cake), special games (Musical chairs) and individual customs (making a wish as you blow out the candles). Each of these is a folklore artifact in its own right, potentially worthy of investigation and cultural analysis. Together they combine to build the custom of a birthday party celebration, a scripted combination of multiple artifacts which have meaning within their social group.