👉 "Black tongue" is a term that refers to an unrefined or uncontrolled language used by individuals who are not proficient in speaking English. This can include people who speak with a thick, nasal voice or who have difficulty understanding written communication. The term was originally used to describe the behavior of people who use slang or other non-standard forms of language, but it has since evolved into a more general term that applies to any form of uncontrolled speech.
