combination of "i.o.u." and "f.y.i."
1. -
Literally, "I owe you
information." Similar to i.o.u. or i.o.u.1
-Roughly, "I'll get
back to you."
2. Roughly, "I have to tell you this." Could be derogatory, similar to f.y.i.
1.
-"Dude, thanks for telling me she cheated on me. i.o.y.i."
-"I
don't know what we're doing tonight. i.o.y.i."
2.
-"Man... i.o.y.i... that
asshat is going to fire you."
-(Insult) "Oh and i.o.y.i., that white dress does make you look fat, which would matter if you weren't
dumb as a doorknob."