A hollow egg filled with confetti or colored eggshells, broken over someone's head during celebrations, especially at Easter or Cinco de Mayo.
Spanish cascaron (eggshell), from cascara (shell/bark). The diminutive suggests small shell fragments.
Cascarones are a beautiful tradition from Mexico and the Southwest—families would empty eggs carefully, fill them with confetti, and seal them back up for a magical moment when you'd crack one on someone's head!
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