"So Fucking Over It" i.e. exhausted, tired of the same thing, annoyed, etc. Pronounced: suh-fo-ee
"Dude, Derek, I have four finals to study for, a term paper due tomorrow, and two books to finish - SFOI"

Derek: "Yeah man, I had the worst customers today at work. Just one of those days, SFOI."
by Bonardi December 10, 2012
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