Why you shouldn't walk under a ladder — and other superstitions explained

Image: Raquel Pedrotti

Superstitions have shaped human behavior for centuries, often rooted in ancient beliefs, religious practices, or sheer coincidence. From knocking on wood to avoiding black cats, even today, these curious traditions persist across cultures. But where did they come from? Here are 12 common superstitions and the fascinating origins behind them.

Image: Alexey Demidov

This practice dates back to ancient pagan traditions, where trees were believed to house spirits. Knocking was a way to summon their protection or avoid tempting fate.

Over time, the superstition spread across cultures, and early Christians adapted it as a reference to the wood of the cross for divine protection. Today, people still "knock on wood" after making a hopeful statement to ward off bad luck.

Image: Savannah B.

Ancient Romans believed mirrors reflected the soul. Breaking one was thought to damage the soul, which would take seven years to renew.

This idea was reinforced in the Middle Ages, when mirrors became expensive. Breaking one was not only a spiritual concern but also a financial burden, and the superstition likely served as a warning to handle them with care.

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The fear of the number 13 stems from Norse and Christian traditions, with an unlucky 13th guest believed to bring misfortune. Friday was also linked to Jesus’ crucifixion.

The superstition intensified in the 20th century through pop culture references, leading to widespread fear. Many buildings and airlines even avoid labeling a 13th floor or row.

Image: Jilbert Ebrahimi

Ancient Egyptians saw ladders as sacred symbols, forming a triangle with the ground. Walking through one was believed to anger the gods.

During the Middle Ages, ladders were associated with gallows, creating a connection with death. The belief persists today, reinforced by the obvious danger of a ladder toppling.

Image: Tatiana Zanon

In medieval Europe, black cats were linked to witches, believed to be their familiars—or even witches in disguise—and crossing paths with one was thought to bring misfortune.

However, this wasn’t true everywhere. In ancient Egypt, black cats were especially revered, and today they are considered lucky in some cultures, particularly in Japan and Scotland.

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In Victorian England, umbrellas with spring mechanisms could accidentally injure people indoors, making this superstition more about a real hazard than a "bad omen."

A deeper origin may stem from ancient Egypt, where parasols were used to shield pharaohs from the sun. Opening one indoors was thought to offend the sun god Ra.

Image: Emmy Smith

Salt was a valuable commodity in ancient times, sometimes even used as currency. Spilling it was considered wasteful and unlucky.

Leonardo da Vinci’s The Last Supper depicts Judas spilling salt, reinforcing its association with betrayal and misfortune. As a countermeasure, tossing salt over the left shoulder was thought to blind evil spirits.

Image: Virgil Cayasa

The Romans believed water had sacred properties, and tossing a coin into a fountain was an offering to the gods for good fortune.

The Trevi Fountain in Rome helped popularize the tradition. Today, millions of coins are thrown into fountains worldwide, with many places donating the collected money to charity.

Image: Matt Benson

The horseshoe’s luck stems from iron’s historical association with warding off evil spirits and fairies. The shape also resembles a crescent moon, a symbol of protection.

In part, the association with the supernatural stemmed from the fact that blacksmiths were highly respected in medieval Europe, and their complex craft was seen by many as nearly magical.

Image: Dayne Topkin

This tradition likely originated with early Christians, who used finger gestures to invoke divine protection and ward off evil.

Over time, the practice became a general symbol of good luck, with people crossing their fingers for positive outcomes—or even to excuse small lies.

Image: Luis Villasmil

This rhyme originated in the 19th century as a playful warning to children, with no real historical basis.

However, cracks in sidewalks were sometimes linked to supernatural beliefs, with some cultures fearing they could allow evil spirits to escape from the underworld.

Image: mohammad hosein safaei

According to one theory, Pope Gregory I promoted saying "God bless you" during the bubonic plague to protect against disease, and the phrase stuck.

Another possible origin comes from ancient Rome, where sneezing was thought to temporarily expel the soul, making a blessing necessary for protection.

Legendary words

"Beam me up, Scotty" was never said: Revisiting classic TV catchphrases

Some lines are so famous that our brains can complete them after hearing the first two words. Writers and stars of some of the most successful TV shows in history made sure of that. An estimated 93 million Americans watched the finale of Cheers, and tens of millions more grew up with Star Trek and I Love Lucy. How could we not remember the words most often associated with them? There may have been a time when expressions like "Ayyyy," "D’oh!", or "Yabba dabba doo!" made no sense. But these 10 catchphrases have become cultural icons in their own right.

True Star Trek fans know that Captain Kirk never said "Beam me up, Scotty" in any television episode or film. Not once, across three seasons, six movies, and hundreds of hours of footage.

Kirk came close several times. For example, in a 1967 episode, he said "beam me up," in a 1969 episode, he said "Scotty, beam us up, fast!" and in the 1986 film Star Trek IV: The Voyage Home, he said, "Scotty, beam me up". But the exact, iconic phrase, as it is so often repeated, was never spoken.

The misquote took on a life of its own through parody, merchandise, and decades of retelling. The misquotation's influence even led James Doohan, who played Scotty, to use the phrase as the title of his 1996 autobiography.

The second great misquote in television history, and arguably the most astonishing one. I Love Lucy ran for 180 episodes across six seasons and is one of the most-watched shows in American TV history. But Ricky Ricardo never said the line that the whole world attributes to him.

He did say variations like "Lucy, 'splain" or "All right, start 'splaining," but never the famous combined phrase. The line grew in the cultural imagination through decades of impersonation, parody, and retelling. But it’s close enough to be recognizable.

Fred Flintstone's thunderous victory cry stems from a hair product jingle. When he was recording lines for an episode of The Flintstones, Alan Reed stepped up to the microphone. The script indicated only one word: "Yahoo!" But Reed had heard his mother repeatedly use the phrase "A little dab'll do ya", an advertising jingle for Brylcreem hair cream, and from that memory, he ad-libbed "Yabba dabba doo!" on the spot.

The producers loved it immediately and kept it in. The Flintstones, which premiered on ABC in 1960, became the first animated series to air in primetime, running for six seasons and 166 episodes. Fred's cry became so embedded in American culture that it outlasted the show by decades; it was used in advertising, politics, sports arenas, and everyday life.

Screenwriter Ben Starr said that young star Gary Coleman was "a born showman who read lines like an old pro." That was because, while Starr had originally written the more mundane "What are you talking about, Willis?", the 8-year-old actor gave the line the twist that made it a phenomenon.

His portrayal of Arnold Jackson, small, sharp, and endlessly suspicious of his older brother's schemes, made him one of the most recognizable child stars in America. Coleman spent much of his adult life being asked to repeat it, and reportedly came to resent it.

Every episode, the same ritual: the bar door swings open, a large man in a rumpled suit shuffles in, and the entire room erupts in a single, joyful shout: "Norm!" It happened 270 times over eleven seasons.

Actor George Wendt, who played Norm Peterson, later said the live audience’s response to his entrance was so overwhelming that the cast would sometimes have to pause several seconds before continuing. Cheers premiered on NBC in 1982, ran for 275 episodes, and won 28 Emmy Awards, which was a record at the time. Its finale in 1993 drew 80.4 million viewers, making it one of the most-watched television episodes in American history.

Unexpectedly, the most famous grunt in television history traces back to a mustachioed Scottish character actor from the 1930s. Dan Castellaneta, the voice of Homer Simpson, explained that his choice of the exclamation was an homage to comic Scottish actor James Finlayson, who used a drawn-out "Do-o-o-o!" as a stand-in for a stronger word.

First heard in a Tracey Ullman Show short in 1988, it became Homer's defining sound when the series premiered in 1989. The screenwriters for The Simpsons never wrote the word "D'oh"; it appears only as "annoyed grunt." Despite this, it was added to the Oxford English Dictionary in 2001, the only TV catchphrase to earn that distinction.

The sound is difficult to spell and instantly recognizable to anyone who watched American television in the 1970s. Arthur "Fonzie" Fonzarelli's leather-jacketed, thumbs-up greeting merited a bronze statue on the Milwaukee Riverwalk in Wisconsin, the city where the show was set. And yet, did you know that the creators never planned for this signature gesture?

Actor Henry Winkler developed it organically as the character took shape. Happy Days, created by Garry Marshall, premiered on ABC in 1974 and ran for eleven seasons. Winkler's Fonz was supposed to be a supporting character; instead, he became the most famous person on the show.

The cultural footprint was massive. In 1980, Winkler donated one of Fonzie's leather jackets to the National Museum of American History at the Smithsonian Institution in Washington, D.C., where it has been exhibited since.

Walter Cronkite's CBS Evening News became the first half-hour network weeknight news broadcast in 1963. In an effort to punctuate the longer format and personalize it, Cronkite conceived and delivered for the first time his iconic sign-off: "And that's the way it is."

He used it for the next eighteen years, through the Kennedy assassination, the Moon landing, Vietnam, and Watergate. Every event that defined a generation concluded with the same seven quiet, certain words. Of course, keeping to the standards of objective journalism, he deliberately omitted the phrase on nights when he ended the broadcast with his own opinion rather than reported facts.

The discipline of knowing when the phrase applied may have contributed to making him the most trusted man in America, as a poll in 1972 indicated.

No catchphrase on this list required more work to maintain. In 120 episodes across three seasons, Burt Ward's Robin delivered the phrase to Adam West’s Batman with a different word every single time. It meant the writers needed to take meticulous records to ensure they never repeated themselves.

The collection became known among fans as "the Holyism." The results ranged from the logical "Holy smoke!" to the creative "Holy bijou!", and the gloriously absurd "Holy uncanny photographic mental processes!".

The show premiered on ABC in 1966 and ran twice a week in its first season, with a scheduling innovation that left audiences on a cliffhanger every Wednesday and resolved it every Thursday.

On CBS, Edward R. Murrow chose these five words to close every broadcast of "See It Now," the newsmagazine and documentary series. The most noted episode of the program came in March 1954, when Murrow used the broadcast to take on Senator Joseph McCarthy directly, letting the senator condemn himself through his own recorded words.

Murrow's closing that night was precise: "Cassius was right: 'The fault, dear Brutus, is not in our stars, but in ourselves.' Good night, and good luck." The broadcast is credited with significantly contributing to McCarthy's political downfall.