Derived transliterally from the Japanese word 'Katapan' which is a combined form of two words 'Kata' meaning shoulders and 'Pan' which comes from the english word 'Punch' meaning the act of hitting an object with closed fist.
A lot of ignorant, dumb, spoiled, and ego-boosted, kids from 12-18 of age who think they are really bad-ass and the center of attention play this so called 'game'.
This game is practiced almost everywhere in schools, homes, facilities, outdoors, private or public in Japan. It is more common though, in places like an All-Boys Catholic School, eg. St. Mary's International Schools of Abundant Guys. Seeing dumb, hyper kids playing Katapan on the streets often says a lot about their mentality level and undeveloped human nature.
The game is really simple. Two kids usually get together to punch each other's shoulder while taking turns. Whoever can bare more pain usually wins.
Simply said; 'Dumbass Game'

(n.)
Usually used to describe people with extra talent or high IQ.
Originated in Japan after the genius Mule Yoshida

(N.) Used to define men who shove their dicks against people around him. Happens most of the time in crowded places, such as a morning public train.

(v.) an act of running off to the bathroom, when in bed with your parter and getting close to orgasm, and scooping the shit out of the toilet bowl that you let out an hour ago to only come back running to your sexually desirefully waiting opponent and mash it hardcore in his/her face.
*This action often comes with consequences when used as a birthday surprise.

A safely said 'legendary reggae artist' raised in the slums of Jamaica. Most of his songs are profound and often about the world's struggle, politics, the poor, nature, and the mind's unity and power. He began performing reggae songs after Bob Marley and other reggae artist's influence.
His name is deliberately spelled 'NiyoRah'. Derived from his name Niyo and Rah, the Rastafarian perpeturator.

A form of fart that makes no noise when released but consequentially smells horrendous and fatal. Often performed by individuals lacking courage or pride. Also known as the 'Silent Killer' or 'Silent Bomb'

Rip-off shwag weed sold by Jews. usually contaminated with bacteria, pesticides, and dirt and the like