Here’s your Japanese vocabulary lesson for the day:
■ Chinpoji – Cheenpojee – [noun]
The perfect position for a man’s junk to rest in his underwear, pants, etc.
For men worldwide, to function normally we have to have our gear oriented in the correct position. If through moving or sitting we fall out of chinpoji, then our minds become clouded with neuroses.
According to a survey by Japanese underwear maker Wacoal, 75% of men “are anxious about the positioning of their ‘front parts.’” Not just the discomfort going on inside the pants; many men feel that their packages can be seen by people on the outside too when they’re out of place. This causes us to perform emergency public adjustments, which makes any woman within eyeshot go “ugghhh.” In the end no one wins.
Yahoo Japan’s R25 explored this issue deeper, seeking to discover if all men’s chinpoji are the same and, if so, ask a medical professional why. Here’s what they found.
In a survey they asked 300 men aged 25 to 39 what position their chinpoji is. Here are the preferred positions.
1 – Left (38.7%)
2 – Right (23.0%)
3 – Down (22.0%)
4 – Up (15%)
5 – Other (0.7%)
While “up” and “down” seems rather uncomfortable, the mind reels at what that 0.7% does. Straight out? Coiled? Over the shoulder?
Anyways, the results of the survey shows that male genitalia are just like snowflakes. There’s a lot of variety. But there does seem to be a lot of guys pointing to the left. Is there a reason for that?
R25 interviewed a medical professional who explained that there’s no medically determined cause, but he did have his own theory.
“Many men in Japan are right-handed and often use that hand for masturbation. Because of this, the penis is able to bend to the left more easily because of the repeated pressure applied from the right hand. So the genitals are likely to fall on the side opposite of the dominant hand.”
Although the doctor’s logic seems reasonable, he is the first to admit there are many other factors that come into play including size and shape as well as the style of clothing.
So it seems that guys vary widely on their chinpoji and the location is possibly related to going on a date with Palmela Handerson, but what can be done to prevent guys from falling out of their chinpoji?
Wacoal has developed a new style of underwear [pictured above] with the sole purpose of maintaining chinpoji. Called Posi-Fit, they are designed so that when you sit down or bend over there is no slack in your shorts, ensuring Willy doesn’t get free.
The price is a little steep at 3,675 yen (US$45) but how can you but a price on round-the-clock chinpoji?

Briefs in Brief: Top Underwear Developments in Japan
How many times a day do Japanese men adjust their junk? New survey investigates
Japan now has potato chip-covered chocolate, and it’s amazing!【Taste test】
Pizza Hut Japan’s hot lucky bags are perfect for a New Year’s pizza party
Japanese beef bowl chain Sukiya’s 2026 Smile Box lucky bag basically pays for itself
Majority of Japanese mayors say foreign residents are essential but most see good and bad effects
We revisited Sweets Paradise after a decade to see if Japan’s dessert buffet still delivers
What’s inside the lucky bag from Akihabara’s largest adult toy shop?
Japanese toilet sweets put a new twist on tradition
Japan’s first hotel with a human washing machine is now ready for you to come and bathe in it
Japanese department store rooftop is a secret oasis where you can escape the crowds in Tokyo
Green tea chocolate-covered potato chips arrive in Japan! 【Taste test】
Starbucks Japan ready to get Year of the Horse started with adorable drinkware and plushies【Pics】
Hayao Miyazaki says Happy New Year to Studio Ghibli fans with new art for Year of the Horse
We found possibly the quietest Japanese-style hotel in Tokyo’s bustling Shinjuku district
Cup Noodle tries an authentic Jiro-style ramen, but something’s not quite right
The best Starbucks Japan Frappuccinos we want to drink again in 2026
That time Seiji called JASRAC to ask why he didn’t get paid royalties for his song being on TV
Japan’s oldest largetooth sawfish in captivity back on display in Mie Prefecture
7-Eleven Japan starts new temporary luggage storage service in over 300 branches
Disillusionment at Tsukiji’s tourist-target prices led us to a great ramen restaurant in Tokyo
Starbucks teams up with 166-year-old Kyoto doll maker for Year of the Horse decorations【Photos】
Tokyo considering law requiring more trash cans following litter increase in heavily touristed area
Tokyo’s Tsukiji sushi neighborhood asks tour groups to stay away for the rest of the month
Tokyo event lets you travel back in time, for free, to celebrate 100 years since Showa era start
Japan may add Japanese language proficiency, lifestyle classes to permanent foreign resident requirements
Sanrio theme park in Japan announces plans to expand into a Sanrio resort
Stamina-destroying “Paralysis Noodles” are Tokyo’s newest over-the-top ramen innovation
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
Japan’s deadliest food claims more victims, but why do people keep eating it for New Year’s?
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
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
Starbucks Japan reveals new sakura drinkware collection, inspired by evening cherry blossoms
Updated cherry blossom forecast shows extra-long sakura season for Japan this year
Leave a Reply