Rojao, sometimes written rojão, is the Portuguese word for a Brazilian firecracker firework commonly fired at parties, football matches and festivals. The 13 tiro version means thirteen shots in quick succession, a popular format sold for loud celebrations. Clips of this barrage spread widely in Brazilian WhatsApp groups and meme edits, where the sound alone signals festivity or mock chaos without needing the video. It remains a go-to shorthand online for an exaggerated Brazilian celebration.