Meth are Methampheamine. they are similar to cocain and very powerful street drug. they are like crystal drug. you can snort it through the nose, smokeit, or injected it. using it the drug creates a false sense of happiness and well-being—a rush (strong feeling) of confidence that may be the symptoms. how to prevent std, One way is to have protected sex! use condom for male or female. Reduce sex partner. if have more than one sex partner. I say get a regular check up with the doctor and alway used condom to be safe.