My most memorable April Fool's Day happened when I was in 3rd grade. The majority of the day passed without much event. However, when I went to put on my pajamas for bedtime, I couldn't get into them because the cuffs were sewn shut. Nice one, Mom!
April is the month of Aphrodite/Venus. There are a couple of explanations as to why the first day of this month is called "April Fish" in some countries, but when one considers that Aphrodite emerged from the sea, and eating seafood allegedly inspires people to kiss each other, the connections don't seem coincidental.
Happy April Fool's Day, and keep an eye out for Francophiles who might stick a paper fish on your back.
Image obtained here