The Office of National Drug Control Policy (ONDCP) maintains a database of drug related street terms. The database includes more that 2000 words, broken down alphabetically, by drug type or by cost, use and trade.
Enough words to make any regular conversationist sound like a seasoned drug user.
These are some examples of less ordinary terms:
The complete list can be found at http://www.whitehousedrugpolicy.gov/streetterms/Default.asp