O Opium
O.J. Marijuana
O.P. Opium
O.P.P. PCP
O.Z. One ounce of a drug substance
OCs OxyContin
Octane PCP laced with gasoline
Ogoy Heroin
Oil Heroin; PCP
Old garbage Heroin
Old navy Heroin
Old Steve Heroin
On a mission Searching for crack and/or being high on crack
On a trip Under the influence of drugs
On ice In jail
On the ball When a dealer shaves a slice of methylenedioxymethamphetamine (MDMA) into a bag of heroin
On the bricks Walking the streets
On the nod Under the influence of narcotics or depressant
One and one To inhale cocaine
One and Ones Talwin and ritalin combination is injected and produces an effect similar to the effect of heroin mixed with cocaine.
One bomb 100 rocks of crack cocaine
One on one house Where cocaine and heroin can be purchased
One plus one sales Selling cocaine and heroin together
One tissue box 1 ounce of crack
One way LSD; heroin
One-fifty-one Crack; crack sprinkled on tobacco
One-stop shop Place where more than one drug is sold
Onion 1 oz. of crack cocaine
Oolies Marijuana cigarettes laced with crack
Ope Opium
Optical illusions LSD
Orange bandits Methylenedioxymethamphetamine (MDMA)
Orange barrels LSD
Orange crystal PCP
Orange cubes LSD
Orange haze LSD
Orange line Heroin
Orange micro LSD
Orange wedges LSD
Oranges Amphetamine
Organic quaalude Gamma hydroxybutyrate (GHB)
Os OxyContin
Outerlimits Crack and LSD
Owsley LSD
Owsley's acid LSD
Ox OxyContin
Oxicotten A semi-synthetic opiate
Oxy OxyContin
Oxy 80's A semi-synthetic opiate
Oxycet A semi-synthetic opiate
Oxycotton OxyContin
Oyster stew Cocaine
Oz Inhalants
Ozone Marijuana, PCP and crack cigarette; marijuana cigarette; PCP
OZs Methamphetamine