FYI means For Your Information... i dunno WTH u ppl are on about; sayin it means Fuck You Idiot... and that crap...it's been on TV, on kid's programmes...on the Simpsons...
Homer Simpson- " FYI- while you two were arguing i ate your breakfasts."
Lisa & Bart together- "D'oh!"
It's quite simple actually. It was originally a shortened version for For Your Information.
However, people have made up other things that can stand for FYI. For example "Fuck You Idiot". But, that's a bit pointless if you ask me. Saying the whole thing has a grander effect.
FYI is an acronym for "For your information." So, instead of writing "For your information" you would simply write "FYI" to get your point across. (Hence, an acronym)
An e-mail may be forwarded and in the content you can write "FYI" and the reader should then scroll down to read the remainder of the e-mail.
Can be mistaken for "For your FYI" - this is misuse of acronym.
Proper use: "The can of corn is in the top shelf, FYI."
Misuse: "For Your FYI it is our boss's birthday today" - wrong.
Something idiots say because they're too lazy to spell 'for your information'.
A random girl online: Ha, losers! I just got a bf!
Me: You're probably a ten-year-old who just wishes she had one
A random girl online: Uh, fyi, I DO have a boyfriend!
Me: D-Did you just say... 'fyi'
A random girl online: Ugh, yes!
Me: 10-year-old confirmed