100: A slang term for a 100 size cigarette

12 Step Program: This is exactly what it says.  A 12 step program for use with any disease. addiction, compulsion, etc.  It was primarily adapted for alcoholics but has now been used with any addiction.  The 12 Step Program is basically the same around the world.

1UP's: A slang term for psychedelic mushrooms.

2-4: Slang for a twenty four pack of beer

256: A slang term for cocaine spelling "blo" on a telephone keypad.

30s: A slang term for a low quality marijuana.

420: A slang term for Marijuana.

50: Slang term for a regular cigarette.

51 or 51er: A slang term for a marijuana joint rolled with cocaine.

7 up: A slang term for 7 grams (1/4 ounce) of cocaine.

714: Street name for methaqualone

8 ball: A slang term for 3.5 grams (1/8 ounces) of cocaine.