Flappers and bootleggers might be the most memorable aspects of the 1920s, but there's a lesser-known, yet no less colorful, trend from that decade: flagpole sitting. From the glamorous hills of Hollywood to the blue-collar dwellings of Union City, New Jersey, this unusual pastime turned eccentric showmen and ordinary people into overnight celebrities, before the crushing reality of the Great Depression grounded their climb to stardom.

Flagpole sitting is exactly what it sounds like: a person climbing on top of a towering pole, usually in the middle of a city, and testing their endurance by sitting atop it for as long as their body holds up. It began in Hollywood in January 1924, when a former sailor, boxer, steelworker, and stuntman named Alvin “Shipwreck” Kelly was hired by a local theater to sit on a pole outside of the building for as long as possible to drum up publicity for a new movie. Kelly, a New York City native—whose nickname was supposedly inspired by his dubious claims as a Titanic survivor—wowed crowds by perching himself on the pole for an astonishing 13 hours and 13 minutes. The stunt worked, and once it got picked up by the papers, offers started pouring in from more businesses to perform pole-sittings. Kelly was eager to oblige.

News of Kelly's exploits spread, and before long, men, women, and children were climbing poles of their own. There was the three-week feat of Bobbie Mack, a young woman from Los Angeles; Joe “Hold ‘em” Powers, who sat for 16 days in Chicago in 1927 and climbed back down with six fewer teeth than he started with after a storm smacked him face-first into his pole; and Bill Penfield, who braved a pole for 51 days in Strawberry Point, Iowa before a storm forced him down. In 1928, a 15-year-old named Avon Foreman of Baltimore even established a juvenile sitting record of 10 days, 10 hours, 10 minutes, and 10 seconds (he practiced on an 18-foot hickory tree in his backyard). Foreman’s accomplishment was so inspiring to Baltimore mayor William F. Broening that he publicly declared that the youngster exhibited “the pioneer spirit of early America.”

Still, Kelly was the one making a big business out of pole sitting. Even when he wasn’t holding the record, he was the ambassador of the bizarre sport. He toured 28 cities, attracting massive crowds that jammed streets and lined rooftops just to get a glimpse of the daredevil poking out among the apartment buildings and businesses of Downtown, USA.

Kelly's notable feats included an 80-hour sit in New Orleans and the 146 hours he spent high above Kansas City's Old Westgate Hotel. But even those were overshadowed by his largest-scale stunts: 312 hours on top of Newark’s St. Francis Hotel in 1927, 22 days on a pole above a dance marathon (another endurance fad of the time) in Madison Square Garden, and 23 days in 1929 in Baltimore’s Carlin’s Park on a pole that was 60 feet high. By Kelly’s own calculation, he’d spend around 20,613 hours pole-sitting during a career that lasted over a decade.

His peak came in 1930 when he lasted 49 days and one hour on a 225-foot pole on Atlantic City’s steel pier. The feat was witnessed by as many as 20,000 onlookers during the weeks he spent up top, becoming one of the first of many spectacles that would grace the pier in the 1930s. (He’d eventually be followed by acts like Rex, the water-skiing “wonder dog”; JoJo, the boxing kangaroo; and the city’s infamous diving horse routine.)

Estimates of Kelly’s fees range from $100-$500 a day throughout his career, paid by whatever outlet needed the publicity and sometimes by crowds who spent a quarter to get a view of his act from nearby hotel rooftops. And what did those onlookers see, exactly? A man on a circular padded seat high above the rabble, sometimes reading the paper, other times enjoying a shave. For food, he’d stick mainly to a liquid diet of broth and water, along with cigarettes, all of which were lifted up to him in a bucket. When he needed to sleep, he’d stay seated by wrapping his ankles around the pole and securing his thumbs into holes in his seat before nodding off. That's if he rested at all—he was also known to deprive himself of sleep on the pole for as long as four days.

The big money would dry up soon after his Atlantic City stunt, and the realities of the Great Depression put an end to flagpole sitting as a career. With up to a quarter of the population unemployed, people were apparently less interested in opening their papers to stories of men and women testing endurance at the top of a pole for more money than the readers would likely see all year.

"As Shipwreck Kelly analyzed it, it was the Stock Market crash that killed pole-sitting as the golden egg that paid the goose," a writer for The Evening Sun in Baltimore put it in 1944. "People couldn't stand to see anything higher than their busted securities."

Kelly’s personal story ends on a similarly somber note. Penniless and stripped of his daredevil veneer, he died of a heart attack in 1952 at the age of 59, his body found not far from the room he rented on West 51st Street in New York City. Underneath his arm at the time of his death was a scrapbook of newspaper clippings detailing his accomplishments as a once-champion flagpole sitter.

Though flagpole sitting has fallen out of the public eye since the Depression, it has occasionally shown faint signs of life. In 1963, 17-year-old Alabama native Peggy Townsend cruised past all of Kelly's highest marks by spending 217 days on a pole for a radio contest. That time was later beaten by Kenneth Gidge, who topped her at 248 days in 1971 before becoming an artist, inventor, and New Hampshire state representative later in life.

Today, the occasional pole-sitter still pops up in the news, though they're now most likely perched for protests or as living art installations. Regardless of the purpose behind it, it's unlikely that a person atop a flagpole will ever attract a sea of thousands of onlookers again—and the days when a man like Kelly could become a household name and dub himself the "Luckiest Fool on Earth" seem long gone.