1. A navel (bellybutton) that protrudes outward. They said my outtie should disappear by the time I turned five, but I've still got it nearly 20 years later.
2. slang Out of here; leaving. That's it, I'm not waiting any longer—I'm outtie! No way, this is too gross for me! I'm outtie.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.