Why Do Ghosts Say ‘Boo’?

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People have screamed "boo," or at least some version of it, to startle others since the mid-16th century. (One of the earliest examples documented by the Oxford English Dictionary appeared in that 1560s poetic thriller, Smyth Whych that Forged Hym a New Dame.) But ghosts? They’ve only been yowling "boo" for less than two centuries.

The etymology of boo is uncertain. The OED compares it with the Latin boare or the Greek βοᾶν, meaning to “cry aloud, roar, [or] shout.” Older dictionaries suggest it could be an onomatopoeia mimicking the lowing of a cow.

Whatever the origins, the word had a slightly different shade of meaning a few hundred years ago: Boo (or, in the olden days, bo or bu) was not used to frighten others but to assert your presence. Take the traditional Scottish proverb “He can’t say bo to a goose,” which for centuries has been a slick way to call somebody timid or sheepish. Or consider the 1565 story Smyth Whych that Forged Hym a New Dame, in which an overconfident blacksmith tries to hammer a woman back into her youth, and the main character demands of his dying experiment: “Speke now, let me se / and say ones bo!”

Or, as Donatello would put it: “Speak, damn you, speak!”

But boo became scarier with time. After all, as the OED notes, the word is phonetically suited “to produce a loud and startling sound.” And by 1738, Gilbert Crokatt was writing in Presbyterian Eloquence Display’d that, “Boo is a Word that's used in the North of Scotland to frighten crying children.”

(We’re not here to question 250-year-old Scottish parenting techniques, but over at Slate, Forrest Wickman raises a good point: Why would anybody want to frighten a child who is already crying?)

In 18th century Scotland, bo, boo, and bu would latch onto plenty of words describing things that went bump in the night. According to the Dictionary of the Scots Language, the term bu-kow applied to hobgoblins and “anything frightful,” such as scarecrows. The word bogey, for “evil one,” would evolve into bogeyman. And there’s bu-man, or boo-man, a terrifying goblin that haunted man:

Kings, counsellors, and princes fair,

As weel's the common ploughman,

Hae maist their pleasures mix'd wi' care,

An' dread some muckle boo-man.

It was only a matter of time until ghosts got lumped into this creepy “muckle boo-man” crowd.

Which is too bad. Before the early 1800s, ghosts were believed to be eloquent, sometimes charming, and very often literary speakers. The spirits that appeared in the works of the Greek playwrights Euripides and Seneca held the important job of reciting the play’s prologue. The apparitions in Shakespeare’s plays conversed in the same swaying iambic pentameter as the living. But by the mid-1800s, more literary ghosts apparently lost interest in speaking in complete sentences. Take this articulate exchange with a specter from an 1863 Punch and Judy script.

Ghost: Boo-o-o-oh!

Punch: A-a-a-ah!

Ghost: Boo-o-o-o-oh!

Punch: Oh dear ! oh dear ! It wants’t me!

Ghost:  Boo-o-o-o-oh!

It’s no surprise that boo’s popularity rose in the mid-19th century. This was the age of spiritualism, a widespread cultural obsession with paranormal phenomena that sent scores of people flocking to mediums and clairvoyants in hopes of communicating with the dead. Serious scientists were sending electrical shocks through the bodies of corpses to see if reanimating the dead was possible; readers were engrossed in terrifying Gothic fiction (think Frankenstein, Zastrozzi, and The Vampyre); British police departments were reporting a heightened number of ghost sightings as graveyards were plagued by “ghost impersonators,” hoaxsters who camped out in cemeteries covered in white robes and pale chalk. It’s probably no coincidence that ghosts began to develop their own vocabulary—limited as it may be—during a period when everybody was curious about the goings-on within the spirit realm.

It may also help that boo was Scottish. Many of our Halloween traditions, such as the carving of jack-o’-lanterns, were carried overseas by Celtic immigrants. Scotland was a great exporter of people in the middle of the 1800s, and perhaps it’s thanks to the Scots-Irish diaspora that boo became every ghost’s go-to greeting.

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Why Are There 10 Hot Dogs to a Pack But Only 8 Buns?

tacar/iStock via Getty Images
tacar/iStock via Getty Images

Watching competitive eating champion Joey Chestnut cram dozens of hot dogs down his throat would make anyone crave a grilled log of processed meat this summer. But shopping for hot dogs can be a confusing experience. The dogs are typically sold in packs of 10, but the buns are sold in packs of eight. What's behind this strange dog and bun inequality?

According to the National Hot Dog and Sausage Council—yes, there is a National Hot Dog and Sausage Council—there’s a good reason for the discrepancy. For starters, distributors of hot dogs are almost always different from manufacturers of baked goods like rolls. The hot dogs are sold in packs of 10 because producers of meat (or meat-like) products selected that quantity when hot dogs started to sell at retail grocery stores in the 1940s. Oscar Mayer, which led the charge into direct-to-consumer hot dog packaging, sold hot dogs by the pound in accordance with how meat is typically priced. Having 10 dogs that weighed 1.6 ounces each seemed like the ideal distribution of weight.

Bakeries, meanwhile, have standards of their own. Buns and sandwich rolls are usually sold eight to a pack because the baking trays for the elongated buns are typically sized to fit that number. Two sets of four buns come off the tray, which is the reason why buns are often still attached to one another when you open a bag.

These standards were created independently of one another: Bakeries weren’t too preoccupied with hot dogs when they were settling on a four-roll tray standard, and hot dog manufacturers weren’t thinking about how difficult it would be for bakeries to break from their conveyor system to offer 10 buns to a pack.

It can be frustrating if you buy just one or two packages of each, but if you’re hosting a big enough party, the uneven number doesn’t matter. You just need to buy five packages of buns and four packages of hot dogs to have 40 matching pairs. No complicated calculations required.

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When Are the Dog Days of Summer?

Dorottya_Mathe/iStock via Getty Images
Dorottya_Mathe/iStock via Getty Images

The official “dog days” of summer begin on July 3 and end on August 11. So how did this time frame earn its canine nickname? It turns out the phrase has nothing to do with the poor pooches who are forever seeking shade in the July heat, and everything to do with the nighttime sky.

Sirius, the Dog Star, is the brightest star in the sky. The ancient Greeks noticed that in the summer months, Sirius rose and set with the Sun, and they theorized that it was the bright, glowing Dog Star that was adding extra heat to the Earth in July and August.

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