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1.
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 05, 2006
 
2.
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
 
3.
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 16, 2008
 
4.
1) When a gai-jin, foreigner, breaks Japanese cultural conventions intentionally or mistakenly, and then ignores anyone who tries give a reproach for their behavior.

2) Pretending not to understand the Japanese language and intentionally speaking bad Japanese to get out of any situation.
1) "Fuck yeah I gaijin smashed all of those hairless fuckers when I cannon-balled the onsen (hot spring) without washing off first!"

2) "I had to use my best gaijin smash twice today man. First, lost my train ticket so I was like 'doku ga iku (poison is going) haiku ticket man?' and the staff was like 'mada baka gaijinka? (another stuipid foreigner?)' and let me pass. Second, I was speeding in the rental car and I ran a red light. When the cop pulled me over, I showed him my international driving permit and said 'Nihon....go... ta... ta... tabemas.... Nihongotabemas....en.... Nihongo tabemasen....ka? (Shall we eat the Japanese language?).' To which he promptly gave me my permit and said very loudly 'Red is Stop! No again! Red.... stop!' and drove away happy to rid of the baka gaijin.
by kagekirazuul August 17, 2010
 
5.
Is used to refer to the prowess and power of foreigners or gaijin currently visiting Japan. Also, it appears when a wapanese person describes their activities or what they want to do in Japan.
1) I totally got aboard a train with a expired rail card. Woo! Go gaijin smash!

2) I am so freaking going to drink a whole bunch of sake and sing karaoke with my gaijin smash!