pop off

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb intransitive, informal To leave, and return in a short time
• verb intransitive, informal To die suddenly.
• verb transitive, informal To kill someone.
• verb intransitive, informal To speak frankly; usually to someone else's disdain (i.e. popping off at the mouth).
• verb intransitive, informal To release flatulence, in most cases, in short rapid succession.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb pass from physical life and lose all bodily attributes and functions necessary to sustain life
• verb leave quickly