
Lingerie maker seeks to address the annoying problem called “PK.”
Let’s take a moment to add to our collection of useful vocabulary they won’t teach you in Japanese class. If you take the word kuu (“to eat vigorously”), and combine it with komu (“to insert”), after a bit of pronunciation fiddling you’ll get kuikomu, which means “to ride up.” Add in pantsu (“underwear”), and you’ll get the phrase “pantsu kuikomu,” which describes the situation when your underwear is riding up into your butt crack.
The obvious solution is to just grab the encroaching fabric with your fingertips and yank it back out. However, lingerie maker Wacoal (who is always down for some unusual marketing) realizes that this isn’t such an attractive option for demure young ladies, especially those who’re in their delicate teen years and dealing with the social pressures of school life. And so the company has created a video, with accompanying song, offering ways for schoolgirls to surreptitiously fix their pantsu kuikomu, or “PK,” problems.
The video follows a trio of young ladies through the course of a day at school, during which they have to deal with multiple cases of PK, with the lyrics (full translation later in the article) combining their supposed internal monologues with solutions to their crises. For example, walking down the hall with your friends when PK strikes? Distract them by pointing out the window and saying “Hey, is that a UFO?”
Then stoop down and fix your panties while they’re looking for the flying saucer, a genuine possibility considering that Japan’s government has no existing framework for defense from alien invasion.
Other scenarios covered include pretending to search for a key in your pocket after hopping off your bike following a PK-inducing ride to school, covering your backside with your schoolbag as you use your other hand to adjust your undies, and high-stepping in gym class to work out an unwanted wedge of fabric.
It’s a little odd that the singer is a guy, but if you’d prefer this slice-of-life story to be narrated by a woman, there are alternate versions of the standard-Japanese video which use Osaka, Nagoya, Tohoku, and Hakata dialects, all of which feature female vocalists.
▼ Osaka
▼ Nagoya
▼ Tohoku
▼ Hakata
The song’s complete lyrics are:
Even though you’re just walking
Before you know it, PK! Oh no!
At times like this, stay calm
“Hey, is that a UFO?”
Distract everyone, then fix your panties.
Yeah, non-PK!“‘morning! “ you say, hopping off your bike
But just then, PK! Oh no!
“Huh? Where…where’d I put my key?”
Pretend you’re checking your pocket
And quickly fix your panties
Yeah, non-PK!The school stairs sure are scary!
Your hair stands on end, and super PK!
But, if you’re carrying your bag, you can use it as cover to fix your panties
No one will notice! Or so you thought…But the guy you’ve got a crush on sees you!
“My life is over!”
Yeah, non-PK!Sitting on the floor in gym class, then getting up to jump and jump, spin and spin
Seriously PK!
At times like this, high steps and twisting your hips
You’re a PK-fixing technician!
Yeah, non-PK!Standing up at the start of class
Yup, PK!
“I hate this!”
Writing: PK. Erasing: PK. Putting on your backpack: also PK.
At times like these, everyone experiences the mysteries of PK!
“Knock it off!”Yeah, PK is no good!
Even if you don’t do any of these things
You can say good-bye to PK
From now on, I’m wearing non-PK panties!
As alluded to in the final line, Wacoal has just released a new line of PK-resistant panties, called Non! PK.
Retailing for around 1,300 yen (US$12), they’re designed to be comfortable yet stay in place through a variety of motions, preventing them from rising, twisting, or otherwise shifting into a PK position. They’re available for purchase here through Wacoal’s website.
And finally, to avoid any confusion, we’d like to remind our readers that SoraNews24’s Japanese -language reporter P.K. Sanjun experiences PK no more or less frequently than any other person on our staff.
Source: YouTube/ワコール Wacoal via IT Media
Top image: YouTube/ワコール Wacoal
Insert images: YouTube/ワコール Wacoal, Wacoal






Lifehacks for perverts: How to make a pretty bow out of some pretty panties 【Video】
Wisteria season starts early with blooming of Japan’s Great Wisteria in its beautiful garden
Japan’s best conveyor belt sushi restaurant of seven years ago has now, finally, come to Tokyo
Japanese bento shop sells croquettes for 13 cents, but are they any good?
Final version of Sanrio: Beginning of Kawaii exhibition opens in Tokyo[Photos]
Lawson convenience store at popular tourist site is one of the most unusual in Japan
No, that’s not French bread, it’s Japan’s crazy-big gobo!
Japan has new rules for bicycle riders, and these 14 things could get you a fine or a court date
Japanese sandals dyed with real Uji matcha are here to whisk you off your feet
We try new ‘adrift at sea’ experience and end up floating alone on the Yamaguchi coast
Japan’s super easy sweet potato spread lets you make sweet potato bread thanks to Don Quijote
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Mt. Fuji decorated with a 500,000-flower pink carpet is Japan’s ultimate spring view
Japanese trains in Sapporo might be better than those in Tokyo, thanks to one special feature
30 Pikachus want to share a Tokyo hotel room with you that has separate Grass, Water, Fire spaces
Man bites woman at cherry blossom park in Japan, dies shortly after
Starbucks Japan releases FIVE new Frappuccinos in a day, and we try them all in 90 minutes
Howl’s Moving Castle’s scene-stealing dog is here to clean your home as a plushie mop
Pokémon and Ikea Japan cross over into each other’s worlds with collaboration events
Japan now has a special desk for people who work at home with a pet cat[Photos]
Famous Tokyo cherry blossom spot installs view-blocking screens to fight overcrowding[Video]
Uniqlo announces new T-shirts for One Piece, Naruto and more for manga publisher’s 100th birthday
Train station platform ramen store closes its doors on half a century of history in Tokyo
Starbucks Japan releases new My Fruit³ Frappuccino at only 34 stores around the country
Krispy Kreme releases Super Mario doughnuts in Japan for a limited time
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Japan’s newest Shinkansen has no seats…or passengers [Video]
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says