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Why Does the Sound of Running Water Make You Have to Pee?

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Reader Bill wrote in to ask, “Why does the sound of running water make me want to pee—and sometimes badly?”

The quirk behind the burning need to pee when we hear rainstorms, waterfalls and babbling brooks seems to be all tied up in the power of suggestion.

Most of you are familiar with the name Pavlov, and know that he had something to do with dogs. That something is an experiment where the Russian doctor showed that autonomic responses (visceral reflexes that occur automatically and unconsciously under the control of the autonomic nervous system) could be triggered by outside stimuli.

Dog owners will attest that when a pooch gets its mouth on a piece of meat, they usually produce a river of saliva. In his experiment, Pavlov give dogs some meat powder, which caused them to salivate, right after ringing a bell. After months of repetition, he was able to ring the bell without any meat powder in sight, and the dogs would salivate because they’d been conditioned to associate the bell with food. For another example of classical conditioning in action, see this clip from The Office.

Pavlov thought that a lot of this automatic and unconscious learning happens all the time to people, and you can probably think of a few cases from your own life where you reflexively react a certain way to a seemingly unrelated stimulus. Having to pee at the sound of running water appears to be the same sort of conditioned response. The sound of running water not only mimics the sound of urination itself to create a Pavlovian association, but flushing and washing one's hands also produce that same sound and are closely associated with urinating and further strengthen the connection.

The catch is that this is just hypothetical right now. While many urologists and psychologists think that this is what’s happening, and have said as much in venues like The New England Journal of Medicine, there hasn’t been to my knowledge any published, peer-reviewed research on the underlying reason for the water-pee connection. There’s no denying that it’s there for a lot of people, though, even if we haven’t quite worked out the cause for it.

Plenty of nursing and psychology texts and parenting books advise running water in the sink for situations as varied as potty-training toddlers, helping people with paruresis (shy bladder), and patients fresh out of prostate surgery, who all may have trouble getting the waterworks started unassisted. In the early 1970s, one hospital in New York even gave select patients a tape recorder with headphones and a 30-minute tape of water sounds to ease their bathroom experience. The “audio catheter,” as it was dubbed, made a real splash with the patients and was a huge success.

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Big Questions
How Are Royal Babies Named?
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Jack Taylor, Getty Images

After much anticipation, England's royal family has finally received a tiny new addition. The birth of the Duke and Duchess of Cambridge's second son was confirmed by Kensington Palace on April 23, but the name of the royal newborn has yet to be announced. For the heir to the British throne and his wife, choosing a name for their third child—who is already fifth in line to the throne—likely won't be as easy as flipping through a baby name book; it's tradition for royals to select names that honor important figures from British history.

According to ABC WJLA, selecting three or four names is typical when naming a royal baby. Will and Kate followed this unwritten rule when naming their first child, George Alexander Louis, and their second, Charlotte Elizabeth Diana. Each name is an opportunity to pay homage to a different British royal who came before them. Some royal monikers have less savory connotations (Prince Harry's given name, Henry, is reminiscent of a certain wife-beheading monarch), but typically royal babies are named for people who held a significant and honorable spot in the family tree.

Because there's a limited pool of honorable monarchs from which to choose, placing bets on the royal baby name as the due date approaches has become a popular British pastime. One name that keeps cropping up this time around is James; the original King James ruled in the early 17th century, and it has been 330 years since a monarch named James wore the crown.

If the royal family does go with James for the first name of their youngest son, that still leaves at least a couple of slots to be filled. So far, the couple has stuck with three names each for their children, but there doesn't seem to be a limit; Edward VIII, who abdicated the throne to George VI in 1936, shouldered the full name of Edward Albert Christian George Andrew Patrick David.

Have you got a Big Question you'd like us to answer? If so, let us know by emailing us at bigquestions@mentalfloss.com.

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Big Questions
Why Does the Queen Have Two Birthdays?
CHRIS JACKSON, AFP/Getty Images
CHRIS JACKSON, AFP/Getty Images

On April 21, Her Majesty Queen Elizabeth II will turn 92 years old. To mark the occasion, there are usually a series of gun salutes around London: a 41 gun salute in Hyde Park, a 21 gun salute in Windsor Great Park, and a 62 gun salute at the Tower of London. For the most part, the monarch celebrates her big day privately. But on June 9, 2018, Her Majesty will parade through London as part of an opulent birthday celebration known as Trooping the Colour.

Queen Elizabeth, like many British monarchs before her, has two birthdays: the actual anniversary of the day she was born, and a separate day that is labeled her "official" birthday (usually the second Saturday in June). Why? Because April 21 is usually too cold for a proper parade.

The tradition started in 1748, with King George II, who had the misfortune of being born in chilly November. Rather than have his subjects risk catching colds, he combined his birthday celebration with the Trooping the Colour.

The parade itself had been part of British culture for almost a century by that time. At first it was strictly a military event, at which regiments displayed their flags—or "colours"—so that soldiers could familiarize themselves. But George was known as a formidable general after having led troops at the Battle of Dettingen in 1743, so the military celebration seemed a fitting occasion onto which to graft his warm-weather birthday. Edward VII, who also had a November birthday, was the first to standardize the June Trooping the Colour and launched a tradition of a monarchical review of the troops that drew crowds of onlookers.

Even now, the date of the "official" birthday varies year to year. For the first seven years of her reign, Elizabeth II held her official birthday on a Thursday but has since switched over to Saturdays. And while the date is tied to the Trooping the Colour in the UK, Commonwealth nations around the world have their own criteria, which generally involve recognizing it as a public holiday.

Australia started recognizing an official birthday back in 1788, and all the provinces (save one) observe the Queen's Birthday on the second Monday in June, with Western Australia holding its celebrations on the last Monday of September or the first Monday of October.

In Canada, the official birthday has been set to align with the actual birth date of Queen Victoria—May 24, 1819—since 1845, and as such they celebrate so-called Victoria Day on May 24 or the Monday before.

In New Zealand, it's the first Monday in June, and in the Falkland Islands the actual day of the Queen's birth is celebrated publicly.

All in all, just another reason it's great to be Queen.

Have you got a Big Question you'd like us to answer? If so, let us know by emailing us at bigquestions@mentalfloss.com.

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