The twins and the ball game.
Corn is the flesh of men, but this plant was born from the ball game that the precious twins Hun Ah Puh and Hun Hun Puh played against the gods of the underworld, a match the twins lost and were hence decapitated. The head of one of them was placed on a tree which later gave fruit that were touched by a maiden who got pregnant by that touch. Her sons, Hun Ah Puh and Ixbalanque discovered the implements of the ball game and the fate of their forebears, and were too invited by the gods of the underworld to play the ball game. However, this time the precious twins won.