I’m outa here

I'm out of here

slang I'm leaving. "Out of" is commonly shortened colloquially as "outta." I don't have to listen to this criticism—I'm outta here! OK, well, the train comes in five minutes, so I'm out of here.
See also: here, of, out
Farlex Dictionary of Idioms.

I’m outa here

verb
See I’m out of here
See also: here, outa
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • away from it all
  • be at a disadvantage
  • at a disadvantage
  • address comments or remarks to
  • address (one's) comments to (someone or something)
  • address (one's) remarks to (someone or something)
  • be in it for
  • be more than (something)
  • be more than glad, ready, etc.
  • be out of (one's) head