
Kids find all kinds of ways to playfully bully each other that adults might shake their heads at. In the West, this might manifest as little mean-spirited pranks like nipple twisters, convincing a kid to eat a whole tube of toothpaste, or to run up and touch the creepy cat lady’s house in the middle of the night.
But Japanese kids tend to take a more sexually charged approach. We’ve already talked about the intricacies of the infamous kancho – that mighty, two-handed violation of someone’s hind quarters that happens to every westerner at least once and lingers in their psyche for decades, yet the Japanese shrug it off as just another schoolhouse (or workplace) prank.
But one you may not have heard about is the long-standing tradition of the “Denki Anma.”
Essentially, it amounts to grabbing a prone and unwilling participant by both legs and grinding your foot into their crotch in such a way that shouldn’t hurt but certainly doesn’t feel pleasant.
The phrase is written 電気あんま in Japanese, and literally means “electric massage.” Anma massage, which was closely linked to traditional Chinese medicine, was practiced centuries ago in Japan and is that which today’s (also Japanese) shiatsu massage evolved from, though quite why someone decided that grinding their heel into someone’s love eggs could be considered a “massage,” we’re not sure.
As one might imagine, the denki anma occurs primarily in young male circles, but girl-on-guy, girl-on-girl and guy-on-girl denki anma can and do happen.
While the denki anma has been around for at least a few generations now, there are still elderly Japanese people who have thankfully never experienced or heard of it. It’s said the practice came about at around the same time pro wrestling became popular, explaining why this particular form of torture/mischief is so widespread among young boys.
Still, while it’s an accepted form of play in Japan, westerners that find themselves the target of denki anma can often find it humiliating and somewhat painful, especially for guys, whose dangly bits are extremely sensitive and filled with nerves that connect to such seemingly unrelated areas as the stomach – hence my immediate feeling of needing to hurl when my ex-girlfriend decided to try it out on me one night.
Feature photo: Wikipedia

Oh the things you’ll see when glancing at a nearby passenger’s phone on the trains of Japan
Six types of Japanese people you’ll meet while living in Japan — An illustrated guide
Five types of foreigner you’ll meet in Japan
For chivalry, Japanese man tells female store clerk “I aint got nothing to say to you!”
Constipated cats, sticky blue poop and more: Japan’s 9 weirdest vending machine toys
Japanese temple burns to the ground, fire burning inside for 1,200 years unharmed
Krispy Kreme Japan is bringing two special donuts to the most-forgotten big city in the country
Starbucks Japan hoping fans will go bananas for its new mottainai banana affogato Frappuccino
Man in Japan calls in bomb threat because he doesn’t want to go to his own work farewell party
Japanese vending machine find introduces us to a new drink you can’t get anywhere else
Japan has a new cute and clever sunblock for cat lovers
Memorial bell inside Hiroshima’s Peace Park has been silenced, but for a sweet reason
Tokyo’s life-size Gundam anime mecha statue will be removed this summer
Japan’s izakaya pubs closing at record pace, failing to attract foreign tourists
Kanji ice cream becomes a sell-out hit in Japan
Ichiraku Ramen-inspired ramen sets from Naruto anime pay homage to Naruto, Sasuke, and Sakura
Hundreds of rose bushes in bloom at Tokyo’s off-the-beaten-path, next-to-the-tracks flower street
This Tokyo Station sweets sensation sells out daily, but we finally got our hands on it
Studio Ghibli’s president is leaving the company. Will it change how they make anime?
161-year-old Kyoto confectionary maker releases new edible Pokémon lineup
Let’s hike a Japanese mountain (that isn’t Mt. Fuji) – Mt. Tsukuba[Photos]
The average age of Japan’s hikikomori shut-ins is getting older, survey shows
Japan enters Golden Week vacation period, survey shows one in three plan to ride it out at home
New Kyoto Converse sneakers celebrate Japan with traditional kimono fabrics for your feet
Japan’s new Pokémon jackets give you the look and powers of the Kanto starter trio
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
Japan now has gyoza doughnuts, and they taste like no other doughnut we’ve tried before
Studio Ghibli launches huge new anime movie T-shirt collection with special design details
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]
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
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Video game arcade in Japan invites you to resist Christmas…with fists…
10 weird and funny things Japanese people do
W.T.F. Japan: Top 5 strange things Japanese people do for Christmas【Weird Top Five】
W.T.F. Japan: Top 5 hardest Japanese habits to break 【Weird Top Five】
Language fail: 22 funny and embarrassing tales of Japanese language missteps