International Ninja Day – December 5, 2022, history, significance Back in 2003, Ninja Burger created International Ninja Day on December 5 as a way to celebrate the Ninja “speed” with which their burgers are delivered. Aside from that, ninjas are awesome. We all love them and secretly wish we were one. On this day, wear a ninja mask to work to plague your co-workers with ninja-ness and throwing stars! Got the day off? Dress like a ninja at the mall or run wild in the streets. HISTORY OF INTERNATIONAL NINJA…
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