told us of his experiences with Cascarones at school as a child.
Then I googled them and found this concise history in The Austin Times:
The idea [for Cascarones] was first seen in Asia and later brought to Italy by the explorer Marco Polo. The eggs were often given as gifts and were filled with perfumed powder. The custom then traveled to Spain and was later brought to Mexico in the mid-1800s by Emperor Maximilian’s wife. It was in Mexico that the perfumed powder was replaced with confetti.
In the end making a mess inside made it easier to gather and clean up. But clean up is evidently not something with which the locals concern themselves. This week we have seen the remains of Cascaron 'fights' all over San Antonio, at the Sunken tea gardens, on the nature trails and even in the restroom at the 7-11!!