L - LSD
L.A. - Long-acting amphetamine
L.A. glass - Smokable methamphetamine
L.A. ice - Smokable methamphetamine
L.L. - Marijuana
La Buena (Spanish) - Heroin
La Rocha - Rohypnol
Lace - Cocaine and marijuana
Lactone - GBL
Lady - Cocaine
Lady caine - Cocaine
Lady snow - Cocaine
Lakbay diva - Marijuana
Lamborghini - Crack pipe made from a plastic rum bottle and a rubber sparkplug cover
Las mujercitas (Spanish) - Psilocybin
Lason sa daga - LSD
Late night - Cocaine
Laugh and scratch - To inject a drug
Laughing gas - Nitrous oxide
Laughing grass - Marijuana
Laughing weed - Marijuana
Lay back - Depressants
Lay-out - Equipment for taking drugs
LBJ - Heroin; LSD; PCP
Leaf - Cocaine; Marijuana
Leak - Marijuana/PCP combination
Leaky bolla - PCP
Leaky leak - PCP
Lean - Codeine cough syrup
Leapers - Amphetamine
Leaping - Under the influence of drugs
Legal speed - Over the counter asthma drug; trade name-MiniThin
Lemon 714 - PCP
Lemon drop - Methamphetamine with a dull yellow tint
Lemonade - Heroin; poor quality drugs
Leno (Spanish) - Marijuana
Lenos - PCP
Lens - LSD
Lethal weapon - PCP
Letter biscuits - MDMA (methylenedioxymethamphetamine)
Lettuce - Money
Lib (Librium) - Depressants
Lid - 1 ounce of marijuana
Lid poppers - Amphetamine
Lid proppers - Amphetamine
Light stuff - Marijuana
Lightning - Amphetamine
Lima - Marijuana
Lime acid - LSD
Line - Cocaine
Liprimo - Marijuana and crack rolled in a joint
Lipton Tea - Poor quality drugs
Liquid E - Gamma hydroxybutyrate (GHB)
Liquid ecstasy - Gamma hydroxybutyrate (GHB)
Liquid lady - Cocaine that is dissolved in water and ingested as a nasal spray
Liquid X - Gamma hydroxybutyrate (GHB)
Lit up - Under the influence of drugs
Little bomb - Heroin; amphetamine; depressants
Little ones - PCP
Little smoke - Marijuana; LSD; psilocybin/psilocin
Live ones - PCP
Llesca - Marijuana
Load - 25 bags of heroin
Load of Laundry - Methamphetamine
Loaded - High
Loaf - Marijuana
Lobo - Marijuana
Locker room - Isobutyl nitrite; inhalants
Loco (Spanish) - Marijuana
Loco Weed (Spanish) - Marijuana
Locoweed - Marijuana
Log - Marijuana cigarette; PCP
Logor - LSD
Loony Toons - LSD
Loused - Covered by sores and abscesses from repeated use of unsterile needles
Love - Crack Cocaine
Love affair - Cocaine
Love boat - Marijuana dipped in formaldehyde; PCP; blunts mixed with marijuana and heroin; blunts mixed with marijuana and PCP
Love drug - Depressants; methylenedioxymethamphetamine (MDMA)
Love flipping = Use of mescaline and MDMA
Love leaf - Marijuana/PCP combination
Love pearls - Alpha-ethyltryptamine
Love pills - Alpha-ethyltryptamine
Love trip - Mescaline and methylenedioxymethamphetamine (MDMA)
Love weed - Marijuana
Loveboat - PCP
Lovelies - Marijuana laced with PCP
Lovely - PCP
Lover's speed - Methylenedioxymethamphetamine (MDMA)
LSD - Lysergic acid diethylamide
Lubage - Marijuana
Lucy in the sky with diamonds - LSD
Ludes - Depressants; methaqualone
Luding out - Depressants
Luds - Depressants
Lunch money drug - Rohypnol