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FY FJASAN is a word that came as a miss pronunciation of the swear "FY FAEN" where "FAEN" is one of the several Norwegian words translated as "fuck" in English.
FY FJASAN is a more humoristic portayal of the message "For fuck sake".

This can also be pronaunced in English like: phy pha-n( "EN" is pronaunced as just "N".)
Guy 1: Vil du hjelpe meg med å stappe en gulrot i ræva mi? ( would you help me shoving a carrot in my ass?)
Guy 2: FY FJASAN, DU ER SKIKKELIG DUM!( FOR FUCK SAKE; YOU'RE REALLY STUPID!)
by Emagic570 May 28, 2016
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Jul 12 Word of the Day
The horrible moment when you realise that you have accidentally done something very slightly wrong which has very bad (usually embarassing) implications for you. This is typically the moment of realisation that you just sent a dirty text message to a close member of family, typically your mother, rather than the intended recipient.
Message: "i'm free this afternoon so come over and fuck me senseless, my parents will be out all day"
Recipient: Mum
Message Sent
- Onosecond occurs here -
by Jimmed September 26, 2006
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