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
Starbucks Japan releases new My Fruit³ Frappuccino at only 34 stores around the country
Awesome Ghibli Howl’s Moving Castle figure is also a puzzle and an organizer[Photos]
Nine amazing off-the-beaten-path cherry blossom spots in Japan for yaezakura and shidarezakura
Studio Ghibli unveils new Rollbahn notebook in honour of Howl’s Moving Castle
Why you should be adding Calpis to your beer in Japan
Are 500-yen noodles at Akihabara Ramen Center a great find or cheap miss?
Osaka man reserved and cancelled 1,873 seats at two baseball games to get more space for self
Mister Donut wows matcha lovers in Japan with new Dora Matcha doughnuts
Stunning central Japan wisteria festival is like a purple fantasy straight out of a Ghibli movie
We go looking for a monkey mommy like Punch with Amazon Japan’s ultra low-rated orangutang plushy
Train station platform ramen store closes its doors on half a century of history in Tokyo
Japanese onsen egg maker from 100-yen store Daiso needs to be on your shopping list
Cherry blossoms begin blooming in Japan with record-early starts for sakura season
Studio Ghibli adds new Mother’s Day gift sets to its anime collection in Japan
Tokyo government organizes food truck event to clear out delinquent/homeless teen gathering area
The next time you’re feeling stressed out, you could relax on a Pokémon Psyduck chair from Japan
When will the cherry blossoms reach full bloom in Japan this year?[Forecast]
7-Eleven Japan’s giant fried chicken skewer would be too big to eat, so it’s really for cuddling
Starbucks Japan unveils new sakura cherry blossom collection for hanami season 2026
Studio Ghibli releases Catbus pullback keychain that runs like the anime character
Nine great places to see spring flowers in Japan, as chosen by travelers (with almost no sakura)
Starbucks Japan releases first-ever Hinamatsuri Girls’ Day Frappuccino
Japan’s cherry blossom season predicted to start earlier than we’d thought, especially in Tokyo
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
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
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