1. [verb] (intransitive) (informal) To leave, and return in a short time
2. [verb] (intransitive) (informal) To die suddenly.
3. [verb] (transitive) (informal) To kill someone.
4. [verb] (intransitive) (informal) To speak frankly; usually to someone else's disdain (i.e. popping off at the mouth).
5. [verb] (intransitive) (informal) To release flatulence, in most cases, in short rapid succession.
6. [verb] To thrust away, or put off promptly.