Pop (one) off American British phrasal verb
To kill someone in a very quick or abrupt way
The couple was seen being popped off in the alley last night.
In a gang fight over territory, Joshua was told to pop his brother off.
The man pulled out the gun and popped the other man off.
Very fast.
Quickly and effortlessly
Impulsively or suddenly
Very rapidly and eagerly
Very quickly; in a short period of time
The verb "pop" should be conjugated according to its tense.