PK is an abbreviation for Posse Killer. Which refers to the slaying of Indian Posse members.
"That dude has PK ink, he reps Mdubbz"
"Fuck that nigga!
PK is an acronym for Posse Killer. It is used by rivils of Indian Posse.
"Yo that dude has PK ink that he reps".
"Fuck that goof".