Ключевые слова: 1st, april, april 1, background, business, calendar, card, celebration, concept, creative, date, day, decoration, empty, entertainment, event, festive, fool, foolish, fools, funny, gift, greeting, hanging, happy, holiday, humor, humour, international, invitation, joke, joy, message, month, note, office, paper, pin, prank, purple, red, reminder, sign, smile, spring, sticker, symbol, text, veri peri, week,