Though superfans of The Office may claim otherwise, the phrase spill the beans did not originate when Kevin Malone dropped a massive bucket of chili at work during episode 26 of season five. In fact, people supposedly started talking about spilling the beans more than 2000 years ago.
According to Bloomsbury International, one voting method in ancient Greece involved (uncooked) beans. If you were voting yes on a certain matter, you’d place a white bean in the jar; if you were voting no, you’d use your black bean. The jar wasn’t transparent, and since the votes were meant to be kept secret until the final tally, someone who accidentally knocked it over mid-vote was literally spilling the beans—and figuratively spilling the beans about the results.
While we don’t know for sure that the phrase spill the beans really does date all the way back to ancient times, we do know that people have used the word spill to mean “divulge” at least since the 16th century. The Oxford English Dictionary’s earliest known reference of it is from a letter written by Spanish chronicler Antonio de Guevara sometime before his death in 1545 (the word spill appears in Edward Hellowes’s 1577 translation of the letter).
Writers started to pair spill with beans during the 20th century. The first known mention is from Thomas K. Holmes’s 1919 novel The Man From Tall Timber: “‘Mother certainly has spilled the beans!’ thought Stafford in vast amusement.”
In short, it’s still a mystery why people decided that beans were an ideal food to describe spilling secrets. As for whether you’re imagining hard, raw beans like the Greeks used or the tender, seasoned beans from Kevin Malone’s ill-fated chili, we’ll leave that up to you.