
Intrigued individuals predict huge spike in Japanese toilet paper consumption.
Since there’s really no point in beating around the bush after a headline like that, let’s dive right into it. Earlier this week, Japanese Twitter account @urasahou sent out a method for evaluating the size of one’s manhood, both in length and girth, without having to use a ruler, tape measure, optical scanning, or any other customary measuring apparatuses.
Instead, all you need is a roll of toilet paper, specifically the paper core at the center.
男性器のサイズに関し、非常にわかりやすい資料を見つけたので共有させて頂きます。
— 裏垢のお作法 (@urasahou) January 27, 2018
自称巨根の方もこちらの基準を元に、今一度ご自身の息子さんを見直して頂くと「あいつ言うほどデカくもなかったわ」と言われにくくなるかもしれません。いかがでしたか? pic.twitter.com/8Jae07DQYc
“We found a chart with an extremely simple way to determine whether you have a big penis or not,” tweeted @urasahou, accompanied by the above photos of a penis-substitute sponge being inserted into the toilet paper core.
According to the criteria for length:
● Glans does not protrude from far end of core: Small size
● Two centimeters (0.8 inches) or less of glans protrudes from core: Average size
● Glans protrudes from core: Huge cock
● Entire glans protrudes from core: Irregularly large
And for girth:
● Plenty of room to spare inside the core: Small size
● Snug fit: Average size
● Cannot insert without tearing the core: Giant cock
@urasahou went on to clarify that the test criteria are for use with a standard consumer-sized roll of Japanese toilet paper, and that using a roll meant for commercial use or sale in overseas markets, which could have a different length or diameter, will skew the results. No specific mention of whether the penis is supposed to be erect or not is mentioned, but most such self-evaluations are designed for the member to be at attention.
As to why @urasahou is sharing this information, which has been retweeted tens of thousands of times, the initial charts were accompanied by the suggestion that “If you use this and reevaluate the size of your penis, it’s less likely that someone who sleeps with you will then tell other people ‘He didn’t turn out to be as big as he says he was.’” However, as some online commenters have pointed out, the test is ostensibly meant to be performed after using up all the paper on the roll, so maybe we shouldn’t entirely rule out the possibility that this is a secret marketing campaign by Japanese toilet paper manufacturers to boost consumption as men furiously spool off the paper remaining on the roll when they go home tonight in order to satisfy their curiosity.
Source: Twitter/@urasahou via Otakomu
Featured image: @Twitter/@urasahou
Top image: Pakutaso

Japanese Twitter user spends eight years stacking toilet paper cores, completes entire wall
Japanese arcade restroom asks customers to declare loyalty for dogs or cats in toilet paper poll
Old dog shows new trick with very Japanese solution to toilet paper wall challenge【Video】
Japanese Twitter laments phenomena of “middle-aged man indirect dick kissing” in public toilets
Salomon releases Japan-exclusive Mt. Fuji hiking gear that doubles as an amazing souvenir
A visit to Sri Lanka’s knockoff knockoff Uniqlo (no, we didn’t stutter) to see its rare “Pikachus”
7-Eleven Japan releases chocolate cookies that taste like freshly baked melon bread
The quest for Dragon Quest Yoshinoya figure sets: Worth taking for fans, tricky for scalpers[Pics]
Don’t judge this Kiki’s Delivery Service book by its cover, because it’s not actually a book!
How to cook shiitake mushrooms like a Japanese manga character
Japan moves to enforce language requirements for foreign nationals seeking permanent residency
Udon pudding is about to shake up the noodle scene in Japan
Japan triples departure tax, foreign tourists and locals now must pay more to leave country
Starbucks Japan teams up with Converse Tokyo for a new limited-edition collection in honour of Tanabata
Sanrio Character Poll announces winners, Hello Kitty absent from top 10 in many countries
Live-action Spirited Away stage play announces world tour with first-ever U.S. and Canadian dates
Japanese overnight sightseeing train returns for summer with ramen stops and ocean views
Tokyo has only two barley tea makers, and we visited one to see how mugicha is made
Sleep at Hoshinoya Nara Prison, one of the most unique hotels in Japan
Studio Ghibli combines anime and craftsmanship in new Totoro and Jiji Gobelin tapestry bags
Japan announces sudden 400-percent increase in visa fees for foreigners entering the country
Japanese ninja certification exam attracts 131 candidates from Japan and abroad
Studio Ghibli store Donguri Republic announces opening of first-ever store in America
New Japanese overnight train coming to connect Tokyo with Tohoku in sleep-travel style
Japan launches first overnight Shinkansen bullet train between Tokyo and Osaka this summer
Japanese sweets shop sells an ohagi so exquisite it sells out by noon
Forget Tokyo go-karts – there’s a new way to sightsee on four wheels in Japan
Japanese sweets brand creates new drinkable Cigare and we’re totally here for it
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
Japan’s newest Shinkansen has no seats…or passengers [Video]
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Japanese squat toilet plastic model kit: Weird, gross, or both?【Photos】