According to this Wikipedia article

La Tomatina is a food fight festival held on the last Wednesday of August each year in the town of Buñol in the Valencia region of Spain. Tens of thousands of participants come from all over the world to fight in a brutal battle where more than one hundred metric tons of over-ripe tomatoes are thrown in the streets.

The week-long festival features music, parades, dancing, and fireworks. On the night before the tomato fight, participants of the festival compete in a paella cooking contest.

So today is the day, and here is a video of it from the Grauniad…

Pulp Friction

Does this sound like fun to you?