All Fools' Day

April 1st: This is the day upon which we are reminded of what we are on the other three-hundred and sixty-four.
                                                                          - Mark Twain

Today is All Fools' Day, also called April Fools' Day, a day which in Poland we call Prima Aprillis. People make pranks and are not really serious in this day. The festival is especially popular with pupils who can play practical jokes on their schoolmates and even on their teachers. The person who plays the joke, has to say: "April Fool!"
In Poland we have our Prima Aprilis :)

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