An acronym for Fuck You, You're Stupid.
"That guy parked so close that I couldn't open my door. So I wrote FYYS on his dirty window."
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Often used when forwarding emails; sometimes this could mean "fuck yourself intensively"
FYI
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Hi John,
We should think about that.
BR,
Tom
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when somwone is getting on your nerves and you want to insult the person wihtout been rude you say FYI.
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Kid: theres a party on later can i go
Mum: NO
Kid: Fuck you! im fyi!
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Some guy, usually at work, who's always providing information that you don't really want. Often, he prefaces it by saying, or writing, 'FYI'.
Ted: FYI, I'm just gonna go take a dump. But after I finish up in there, I'll be back.
Me: Thanks a lot, FYI Guy.
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Sometimes a senior citizen wanders off in a hardware or scrapbook store and loses all sense of time, but there is no need to panic or send out an Amber Alert as one would a child. Eventually, however, you may want to let someone know that the person is missing by sending out a calm Geezer FYI.
Peg text her friends: "Geezer FYI: I lost Pete in Sears a few hours ago, but I'm sure he'll show up sooner or later."