pop off

Short definition from Wiktionary

Verb

1. 1
   To leave and return in a short time.
2. 2
   To die suddenly.
3. 3
   To kill someone.
4. 4
   To fire or launch (a shot, projectile, or missile), especially singly or in small bursts.
5. 5
   To speak frankly.
6. 6
   To release flatulence, generally in short rapid succession.
7. 7
   To thrust away, or put off promptly.
8. 8
   To turn off.
9. 9
   To perform extremely well (in a video game or other activity).