On the first day of April, April Fools' Day, everyone's out to play jokes on each other, like covering a donut in baby powder to look like sugar. Turns out people in different countries play different tricks. In France, Italy and Belgium, people try to tape paper fish on other people's backs without being caught. Belgian kids also try to lock their parents out of the house. In the US, people glue doors shut, dyeing the milk pink, or just make up stories to see who will believe them. That sounds better than eating that donut.