" It simply refers to a bunch of drug addicts who rob pharmacies (drugstores) and hospitals for drugs to feed their habit. The word "drugstore" is not used metaphorically in English. However, the word "cowboy" is used figuratively in English, as it is here, to indicate a person who is a drifter, criminal, free spirit, ***, irresponsible person, street smart person, unconventional person, non-conformist, etc.
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