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The strongest documented pranks and hoaxes in this history shortlist range from a newspaper’s imaginary Moon discoveries to a fake report about spaghetti growing on trees. They are not all the same kind of joke: some were publicity stunts, some deliberate deceptions, and one famous radio drama was later remembered as a prank despite evidence that complicates that label. They are ranked here for originality, execution, reach, cultural staying power, and consequences—not simply for how many people they fooled.
What are the best pranks of all time?
This shortlist contains eight documented candidates, not ten. The available evidence does not support adding two more entries just to match the title’s number. “Best” is an editorial judgment: ingenuity and staying power count, but causing confusion or distress is not automatically a virtue.
- The Great Moon Hoax (1835) — An elaborate invented newspaper story that made imagined lunar life sound like scientific discovery.
- The BBC spaghetti-tree report (1957) — A deadpan current-affairs segment made an absurd premise feel ordinary.
- The Cardiff Giant (1869) — A physical fabrication turned into a public spectacle, then complicated by a second fake.
- The planetary-alignment gravity gag (1976) — A broadcaster used pseudo-science to invite listeners to believe they could feel a nonexistent effect.
- The British student flying-saucer hoax (1970s) — A charity publicity stunt drew a larger response from authorities than its organizers expected.
- The Left-handed Whopper (1998) — A fast, plausible product announcement turned a familiar brand into the setup for a joke.
- “Digital Dave” (1980) — The BBC World Service announced an absurd transformation of Big Ben.
- The War of the Worlds broadcast (1938) — A landmark radio dramatization, but not a straightforward intentional prank; its mass-panic legend is disputed.
1. The Great Moon Hoax: What was it?
In 1835, the New York Sun published a six-part series claiming astronomer John Herschel had discovered life on the Moon. Its supposed author, “Dr. Andrew Grant,” was a fictional persona created by journalist Richard Adams Locke, according to the Library of Congress. The stories described fantastical lunar creatures, including winged humanoids.
The hoax’s strength was its form as much as its invention: a serial newspaper account borrowed the authority of scientific news to make the extraordinary sound reportable. It ranks first here for the scale of its imaginative construction and its lasting place in the history of media deception, not because the evidence establishes how many readers believed it.
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2. The BBC spaghetti-tree report: Why did it work?
In a 1957 Panorama segment, Swiss farmers appeared to harvest spaghetti from trees. Guinness World Records recounts the broadcast as an April Fools’ gag. Its central trick was tonal: an absurd claim was delivered in the measured style of a serious current-affairs report.
The segment remains a compact example of how presentation can lend credibility to implausible content. Exact audience figures and the number of viewers who contacted the BBC are not established here, so its place on this list rests on the ingenuity and cultural staying power of the premise rather than a claimed response count. Guinness World Records’ account also discusses other broadcast gags.
3. The Cardiff Giant: How did a fake giant become a spectacle?
In 1869, a ten-foot stone figure was planted on William Newell’s farm and presented as a petrified giant. Smithsonian identifies George Hull as its maker and recounts how crowds paid to see it. The spectacle acquired another layer when P. T. Barnum made a replica and displayed it as genuine, as described in Smithsonian Magazine’s history.
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The Cardiff Giant stands out because the deception was tangible and commercial: visitors could pay to encounter the supposed find. Barnum’s replica also shows how a hoax can multiply rather than end when its original claim is challenged.
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4. The planetary-alignment gravity gag: Could planets make people lighter?
No. In the 1976 broadcast prank described by Guinness World Records, listeners were told that a planetary alignment would briefly reduce Earth’s gravity. The alignment did not create such an effect; this was an April Fools’ gag, not an astronomical event. Guinness reports that people phoned the broadcaster claiming to have felt the change.
The joke turned a scientific-sounding explanation into an invitation for people to interpret their own sensations as proof. Its place here reflects the neatness of that mechanism, while the reported calls show how readily a confident broadcast premise can prompt audience participation. Guinness World Records recounts the gag.
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5. The British student flying-saucer hoax: What was the motive?
In the 1970s, British students staged reports of flying saucers to publicize Rag Week and raise money for local charities. Organizer David Southall told Smithsonian Magazine: “We didn’t mean to cause chaos—in fact, we were rather surprised that it caused all this fuss.” The account describes officials and agencies becoming involved.
The episode ranks for its unexpectedly broad consequences and its stated charitable motive, but the fuss is also a reminder that a prank’s reach can exceed its organizers’ intentions. The account and quotation appear in Smithsonian Magazine’s report.
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In 1998, Burger King promoted a left-handed version of its Whopper as a prank, according to Guinness World Records. The joke used a plausible product announcement from a familiar brand to invite customers to take part in the premise.
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It earns a place for its concise execution: unlike a long-running hoax, it needed only a recognizable product and a claim that sounded just credible enough to prompt a reaction. The available account does not establish further product or sales details.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.7. “Digital Dave”: What did the BBC announce?
In 1980, the BBC World Service told listeners that Big Ben’s faces would be updated and that the tower would be renamed “Digital Dave,” according to Guinness World Records. It was a deliberately absurd announcement, not a real policy proposal.
The gag’s appeal lies in the collision between an iconic landmark and an implausibly modern makeover. Its brevity and clear punch line make it a memorable broadcast prank, though the account does not establish audience response figures. Guinness World Records includes it among its historical examples.
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8. Did the War of the Worlds broadcast really cause mass panic?
The 1938 Mercury Theatre adaptation of H. G. Wells’s novel used simulated news bulletins, but the familiar story of widespread mass panic is disputed. The Library of Congress says the program included repeated warnings that it was fiction and cites a telephone survey of 5,000 households in which about 2% had tuned in. That figure describes the survey’s households, not the total audience, and it cannot establish that no listener was frightened. The Library of Congress explains how newspaper coverage helped popularize the panic legend in its 2016 account.
It is also misleading to treat the broadcast as an unambiguous prank. Smithsonian reports that the collaborators did not expect to deceive listeners, though Orson Welles later described his aim differently. In a 1960 court deposition, he said: “I had conceived the idea of doing a radio broadcast in such a manner that a crisis would actually seem to be happening,” and of making it “appear to be a real event taking place at that time, rather than a mere radio play.” The U.S. National Archives also examines the broadcast’s reception and aftermath in “‘Jitterbugs’ and ‘Crack-pots’”.
Its place on this list is therefore for its formal ingenuity and cultural afterlife, not as proof that a deliberate prank caused a national panic. For a book-length treatment of this broadcast and the history of fake news, Smithsonian points readers to A. Brad Schwartz’s Broadcast Hysteria: Orson Welles’s War of the Worlds and the Art of Fake News.
What these pranks reveal about being fooled
These cases differ in intent and consequence. The Moon story and Cardiff Giant were deliberate deceptions; the spaghetti-tree segment and BBC announcements were broadcast jokes; Burger King’s announcement was a brand prank; the flying-saucer reports were a student publicity stunt. The War of the Worlds program was a fictional drama whose later reputation as a prank needs qualification.
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