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Crack cocaine ârocksâ. Crack cocaine is the freebase form of cocaine that can be smoked. It may also be termed rock, work, hard, iron, cavvy, base, but is most commonly known as just crack; the Manual of Adolescent Substance Abuse Treatment calls it the most addictive form of cocaine.Crack rocks offer a short but intense high to smokers.he short-term physiological effects of cocaine include constricted blood vessels, dilated pupils, and increased temperature, heart rate, and blood pressure. Some users of cocaine report feelings of restlessness, irritability, and anxiety.
Poppers is a slang term given to the chemical class called alkyl nitrites that are inhaled for recreational purposes, especially in preparation for sex.oppers are a class of chemicals called alkyl nitrites. These are chemical compounds of structure RâONO. In more formal terms, they are alkyl esters of nitrous acid. The first few members of the series are volatile liquids; methyl nitrite and ethyl nitrite are gaseous at room temperature and pressure.