While rules of social conduct are very strict in Japan, if you are obviously a foreigner, the general populace will let you get away with breaches in conduct they normally wouldn't forgive.
Using this special status is called "flashing (or showing) your gaijin card."
My visiting friend just flashed her gaijin card and a smile, and stumbled through the ticket gates without paying.
by little_gaijin April 7, 2009
Get the Gaijin Card mug.
Gaijin 4Koma (4-frame foreigners) or 'Reaction Guys' to many who started lurking 4chan after 2006 or thereabouts.

A series of four-paned comics based on two photographs of IGN employees reacting to Nintendo’s announcement of new titles at the E3 conference in 2003/04. The multi-pane set up is typically used to express one’s disappointment and excitement over two separate things.

The original four-paned template sparked the imaginations of many 4chan/IGN forumite and soon enough, the meme was exploited to include all manner of variations e.g. extra panes, excitement before disinterest, photo-shopping the employees heads, inverted colours to denote a division by zeo etc. Thousands of these images exist today.

To those in the know, Gaijin 4Koma is still widely regarded as one of the best memes ever.
Gaijin 4Koma example...

Frame 1: The World Trade Centre.

Frame 2: Employees showing disinterest and blank expressions.

Frame 3: Plane flying into the second tower and exploding on impact.

Frame 4: Employees showing excitement and absolute euphoria.
by 007GoldenShower February 2, 2012
Get the Gaijin 4Koma mug.
A technique used by foreigners, or gaijin, in Japan in order to impose their will on the japanese.
"he upgraded himself to a first-class seat by using the Gaijin Smash"
by Hellome January 6, 2006
Get the Gaijin Smash mug.
The willfull breaking of Japanese convention rules by one who is not Japanese (a forigner cf. a gaijin)
I know its a red light, but I'm going to cross the road anyway, gaijin smash style.

I'm going to gaijin smash that red light.
by Rephaim April 25, 2007
Get the Gaijin Smash mug.
When the Japanese trains are packed at full capacity, and native Japanese refuse to stand/sit around a foreigner.
"Wow, my gaijin bubble extended two whole seats today!"
by ccminny October 30, 2011
Get the Gaijin Bubble mug.
To art of getting away with douchebaggery in Japan and being an ignorant obnoxious foreigner by simply pulling a gaijin smash on their Japanese asses when the shit hits the fan
"I was supposed to give up my priority seat on the train to that old bag but I totally gaijin smashed her ass and acted like I didn't know what the fuck she was bitching at me about"

"I was too cheap and lazy to buy a subway ticket so with JR pass in hand I gaijin smashed my way through the gate before the electric doors could close and then when the guy came running after me and told me I had to buy a ticket I acted like I thought the JR pass covered everything"
by someone elses butt April 17, 2008
Get the Gaijin Smash mug.
The japanese alcoholic difference ''strong zero'' is known as the Gaijin Killer. due to being 8/9%, 350-500ml and very sweet people drink it at insane speeds despite it being 3 to 4 beers worth of alcohol. Coupled with high carbonation many westerners will try to drink 3 to 5 at a sitting and will black out that night.
It's colloquially known as the Gaijin Killer- Joey Bizinger(the Anime man)
by @mrkulci October 16, 2020
Get the Gaijin Killer mug.