Illegal

In many jurisdictions - including new york city - in order for the police to arrest you for drug use, they must confiscate the drugs as well. No drugs, No arrest!Therefore, if you are using drugs illegally, you should do it over a sewage drain. That way, if the police try to arrest you, just drop the blunt down the drain. In order for the police to arrest you, they will need to go into the drain to retrieve that - and they never will.