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An as of yet untested sex act in which the perpetrator, whilst being fellated by the victim, screams "BANZAI!!!!!" and rips a deafening (preferably wet) fart directly in the face of said victim. Extra points are awarded if victim is either drunk from excessive saki or is somehow dressed as a geisha.
"I no longer have a girlfriend after our night in Tokyo ended with a Japanese War Tuba at the hotel."
by Gjers July 10, 2006
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