100 Great Hoaxes for April Fools' Day.
Here are a couple I remember:
#4: The Taco Liberty Bell1996: The Taco Bell Corporation announced it had bought the Liberty Bell and was renaming it the Taco Liberty Bell. Hundreds of outraged citizens called the National Historic Park in Philadelphia where the bell was housed to express their anger. Their nerves were only calmed when Taco Bell revealed, a few hours later, that it was all a practical joke. The best line of the day came when White House press secretary Mike McCurry was asked about the sale. Thinking on his feet, he responded that the Lincoln Memorial had also been sold. It would now be known, he said, as the Ford Lincoln Mercury Memorial.
#7: Alabama Changes the Value of Pi1998: The April 1998 issue of the New Mexicans for Science and Reason newsletter contained an article claiming that the Alabama state legislature had voted to change the value of the mathematical constant pi from 3.14159 to the 'Biblical value' of 3.0. Soon the article made its way onto the internet, and then it rapidly spread around the world, forwarded by email. It only became apparent how far the article had spread when the Alabama legislature began receiving hundreds of calls from people protesting the legislation. The original article, which was intended as a parody of legislative attempts to circumscribe the teaching of evolution, was written by physicist Mark Boslough.
#73: The Origin of April Fool’s DayIn 1983 the Associated Press reported that the mystery of the origin of April Fool's Day had finally been solved. Joseph Boskin, a History professor at Boston University, had discovered that the celebration had begun during the Roman empire when a court jester had boasted to Emperor Constantine that the fools and jesters of the court could rule the kingdom better than the Emperor could. In response, Constantine had decreed that the court fools would be given a chance to prove this boast, and he set aside one day of the year upon which a fool would rule the kingdom. The first year Constantine appointed a jester named Kugel as ruler, and Kugel immediately decreed that only the absurd would be allowed in the kingdom on that day. Therefore the tradition of April Fools was born. News media throughout the country reprinted the Associated Press story. But what the AP reporter who had interviewed Professor Boskin for the story hadn't realized was that Boskin was lying. Not a word of the story was true, which Boskin admitted a few weeks later. Boston University issued a statement apologizing for the joke, and many papers published corrections.
#88: Bank Teller FeesIn 1999 the Savings Bank of Rockville placed an ad in the Connecticut Journal-Inquirer announcing that it would soon begin charging a $5 fee to customers who visited a live teller. The ad, which appeared on March 31, claimed that the fee was necessary in order to provide, "professional, caring and superior customer service." Although the ad was a joke, many customers failed to recognize it as such. One woman reportedly closed her account because of it. The bank then ran a second ad revealing that the initial ad was a joke. The bank manager commented that the first ad ironically "commits us to not charging such fees."