B'one is a contraction derived from
African American Vernacular English (AAVE) and represents the combination of "been done." It is used to express that an action or state has been completed in the past, and its effects are still relevant in the present. This
construction is often employed to convey a sense of extended or continuous duration, indicating that something occurred a while ago but continues to have significance.
Part of Speech: Phrase/Contraction
Pronunciation: bun (rhymes with "fun")