The gods and mortal humans had arranged a meeting at Mecone where the matter of division of sacrifice between gods and men was to be settled. Prometheus slew a large ox, and divided it into two piles. In one pile he put all the meat and most of the fat, skillfully covering it with the ox's grotesque stomach, while in the other pile, he dressed up the bones artfully with shining fat. Prometheus then invited Zeus to choose; Zeus chose the pile of bones. Hesiod describes Zeus as having seen through the trick, realizing that in purposefully getting tricked he would have an excuse to vent his anger on mortal humans. It may be, however, that in mainstream versions of the story Zeus was actually deceived, and that Hesiod is trying to be pious by changing the story to make Zeus look better.