Wiktionary
get out of here
interj. 1 (&lit: English) Command for someone to leave immediately. 2 (context idiomatic informal English) An exclamation of disbelief vb. (&lit: English) To leave or exit a place.
Usage examples of "get out of here".
When, if, we get out of here, you'll worry about polished boots and belt buckles.
If any of us get out of here, we'll regroup in Canadian sector five.