So what was this Pillahuana? The festival’s name itself is informative. It is an agglutination of pilli (children) and tlauana (to become drunk), a literal translation is “The Drunkenness of the Children.” This same term spelt “pillaoano” in the text of the friar Sahagun, was also related to a ceremony known as Tlacoçolaquilo which was a ceremony for placing infants into their cribs. Pillaoano or a feast of eating and drinking followed. This particular use of the term must just be a linguistic coincidence, for the actual festival was not so domestic.
Sources that point to the Codex Magliabechiano say that this event occurred during the Tepeilhuitl to the rain god. They say that the Pillahuana celebration involved children dancing, children drinking, and children committing sexual acts with one another. In this version, the festival was an initiation rite into adulthood and acted as a fertility sacrifice to the rain god who was responsible for a successful corn crop.
Other accounts which may reference Sahagun’s mention of the festival say that this event occurred during the celebration to the fire god once every 4th year. The Aztec, who were successful keepers of complex calendars, understood the need for Leap Years. In this version, parents selected imauiuan and intlauan or godfathers and godmothers for their children. These guardians took the children to the festival where they had their ears pierced before the temple of the fire god and may have watched their first human sacrifice. The family then dined together.
In both versions a coming-of-age is apparent. These were children on the brink of pubescence who were being initiated into the adult world of the Aztec through sexual acts, sacrifices, and alcohol. The ritual consumption of pulque is clearly an important part of that coming-of-age, just as taking shots is today for an American’s 21st birthday.
Mentions of the Pillahuana occur in the obscurity of Mesoamerican scholarship. There really are no primary accounts of the event, and most scholarship relies on the same source or two. The fact that it was only practiced by one of the 7 Aztec ethnicities makes the details of the celebration all the more difficult to reconstruct.
A festival of drunken children in a society that only lets the elderly get drunk is surely out of place. While we cannot know all of the beliefs that coalesced in the celebration of the Pillahuana, we can see that alcohol and age were closely linked in Aztec culture. For these peoples, alcohol was a symbol of the passage of time, either a coming-of-age or a retirement. Even though there were no bouncers in Tenochtitlan to check IDs for age, culture always codifies rules around the acceptable consumption of booze: age is a nearly universal target.