A pillow warrior lives inside each of us, and it's time to let him out for battle!

Thousands of pillow warriors gather in city squares to fight each other and have a great time—this is how the world celebrates international pillow fight day. This weird but funny tradition is now believed to be over a hundred years old.

Mass pillow fights take place in over a hundred cities across the world, and Toronto hosts one of the greatest. It takes place in Nathan Philips Square in front of city hall. The action begins at 3 p.m., and the battle continues for 1 hour (not 3... my pillow can't take it that long).

Only light featherless pillows are officially allowed, but they're always a couple of rule-breakers, so be careful.