Ключевые слова: 1, 1st, 2017, april, background, blocks, calendar, celebration, coffee, color, concept, conceptual, crazy, cultural, date, day, desk, event, fool, fun, funny, handwriting, happy, hoax, holiday, humor, jester, joke, joker, joy, note, paint, pancil, paper, plasticine, popular, practical, prank, symbol, text, warning, wood, work,