Carnaval in Rio! Come!

The celebration which is now called carnival emerged in Europe in the eleventh century and was characterized by the habit of celebrating the arrival of Lent. In every European country this happened in a way. In Portugal, it was the custom of playing pranks and received the name of carnival (which means "beginning"). The celebration comes to Brazil by Portuguese colonists.
Until the nineteenth century, public roads were occupied by lower classes, among them the slaves, who were allowed to play the carnival. The game was to play any liquid or powder on each other.
https://pt.wikipedia.org/wiki/Entrudo