Gírias (I) Slang

icky: unpleasant.
"The food is really icky in the school cafeteria."

I.D.: identification.
"If you want to order a beer, you'll need your I.D."

I'm outta here: I'm leaving; I'm departing.
"Sorry, but I'm outta here, dude."

in: fashionable.
"Ray-Ban sunglasses are really in now."

ivories: teeth.
"Tom Cruise has really beautiful ivories."


Source: http://www.eslcafe.com/slang/i.html