The term "cba" is often used as an acronym for "can't be arsed," which means that someone cannot be bothered or feels too lazy or indifferent to do something. It expresses a lack of motivation or willingness to engage in a task or activity, often implying that it may not be worth the effort.
The acronym "cba" originates from British slang, common in conversational English. It combines "can’t" (a contraction of "cannot") with "be arsed," which is a colloquial way to express minimal effort or concern.