The story
Probably an initialism of crystal (“phencyclidine”) + joint (“marijuana cigarette”).
Etymology from Wiktionary, CC BY-SA 4.0.
KJ
Today it means: Phencyclidine (PCP); also, a marijuana cigarette laced with phencyclidine. Full definition →
Today it means: Phencyclidine (PCP); also, a marijuana cigarette laced with phencyclidine. Full definition →
Probably an initialism of crystal (“phencyclidine”) + joint (“marijuana cigarette”).
Etymology from Wiktionary, CC BY-SA 4.0.