 The god informs Quetzalcóatl that he has to travel through his kingdom four times, while a shell sounds out like a trumpet.However, in place of giving Quetzalcóatl the shell from Mictlantecuhtl he gives him a normal shell, without holes in it.In order to not be mocked, Quetzalcóatl beckons the worms to come out and perforate the shell, thus creating holes.