Shark attacks are no joke. They’re no joke, at least, until they’re a joke. Then they’re hilarious. Brazilians are pretty well known to be some of the best pranksters on the planet. And in this case, they definitely lived up to it–building a fake shark, hiring a bunch of screaming actors, and pour a load of fake blood in the water, and you’ve got a recipe for a whole beach full of terrified people.