Fyi

FYI, there are donuts in the break room. [sentence adverbial use]

I just wanted to give you an FYI about the donuts in the break room. [noun use]

He forwards so many FYIs that sometimes it feels a bit like the boy who cried wolf. [noun use]

At the close of a recent cable describing the recovery of his censor-held photographs of the fighting in the Holy Land, Life photographer John Phillips added the casual postscript: "FYI, Burke narrowly escaped death outside Jerusalem a few days ago."

But I’ve only ever used it combined with hormonal birth control, FYI, and I’m currently not on any birth control.