The drug users speech is unintelligible to others because

Directions: Read the following passage and answer the question.

Drug addicts in some countries form small groups, the customs of which may be unknown to outsiders. They often speak a language that is so full of expression and words created by themselves, that their speech has become unintelligible to those who are not living, or in some way associated, with them. It is amazing to find that, to understand some of today’s so-called pop music, one requires some acquaintance with the peculiar language, of those enslaved to drugs. A great part of the vocabulary is international with a preponderance of American terms or, corruptions of these. This makes it easy for those in search of drugs in a country, not their own, to communicate with those that have some to dispose.