• Bijection, injection and surjection - Wikipedia
  In mathematics, injections, surjections and bijections are classes of functions distinguished by the manner in which arguments (input expressions from the domain) and images (output expressions from the codomain) are related or mapped to each other.
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• Dimethyltryptamine (DMT), Wikipedia
  Dimethyltryptamine, also known as DMT and N,N-dimethyltryptamine, is a hallucinogenic tryptamine, similar in structure to the neurotransmitter serotonin. DMT is created in small amounts by the human body during normal metabolism. Pure DMT at room temperature is a colorless waxy or crystalline solid. DMT was first chemically synthesized in 1931.
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• Methamphetamine, Wikipedia
  Methamphetamine is a synthetic stimulant drug used for both medicinal and recreational purposes. Like most stimulants, methamphetamine can cause a strong feeling of euphoria, thus creating the potential for addiction.
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• Methylenedioxymethamphetamine, Wikipedia
  MDMA (3,4-methylenedioxymethamphetamine), most commonly known today by the street name ecstasy or XTC, is a synthetic entactogen of the phenethylamine family whose primary effect is to stimulate the secretion of and inhibit the re-uptake of large amounts of serotonin as well as dopamine and norepinephrine in the brain, inducing a general sense of openness, empathy, energy, euphoria, and well-being.
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