1) An April 1st, 1985 Sports Illustrated article by George Plimpton profiled pitcher Sidd Finch, who could throw a fastball accurately for a strike at 168 mph! The story said the New York Mets prospect had learned to pitch in a Buddhist monastery. The first letter of each word in the sub headline spelled out the words “Happy April Fool Day – ah fib.” Two weeks later, the magazine revealed the joke.
2) Taco Bell accounts in a 1996 full-page ad in The New York Times that they had bought the Liberty Bell from the U.S. Government. According to the ad, the artifact had been renamed the Taco Liberty Bell. The fast food company said it had made the deal to help reduce the government debt.
3) In 1965, hundreds of British television viewers were delighted by the BBC’s test of sending smells over the airwaves. Many called the BBC to report the test had succeed. Not content to rest of it’s laurels, the Beeb repeated the joke on its website in 2007.