Ключевые слова: 1st, april, boss, business, businessman, celebration, chair, crazy, dangerous, day, first, fool, foolish, fun, funny, hoax, humorous, humour, hurting, joke, joking, joy, kidding, man, manager, mischief, mischievous, nail, office, pain, painful, pin, practical, prank, prick, revenge, revenging, risky, safety, sharp, silly, sitting, stool, surprise, tack, thumb, thumbtack, trick, victim, worker,