Red Rock opium was sold mostly during the late 90's early 2000's. Red Rock Opium is a myth it is actually Dragon's Blood Incense which is resin from the Daemonorops Draco Plant. There is no high, the effect you might feel is just placebo/smoke inhalation. Real opium is black so avoid this stuff at all cost.

(noun) A successful type of theft which results in an acceptable, impressive and rewarding payday for the protagonist.