n. (also spelt "bonkie, bonkey"), a black person who attempts to behave (or assume the airs of) a quintessential, white person. The bonky is oftentimes seen: wearing wire-framed spectacles and a flannel shirt tucked neatly into a pair of khaki trousers, assuming a nasally and overworked white, suburban accent; smiling unhesitatingly; and boasting a European name (i.e. John D. Bailey). In popular culture, Carlton Banks of the sitcom 'The Fresh Prince of Bel-Air' would be an archetypal bonky.
After the bonky had told Winston to 'have a super day,' he leashed his Yorkshire terrier and began to walk around the park.
A bonky is a black person who acts overly white to fit into society, They usually speak with an extra white voice(a la Tony Gwynn or Bryant Gumbel)probably even whiter than most caucasions. They also usually only associate themselves with white people and white culture and are considered sellouts in the black community.
Robin Quivers has only white people at her parties, what a bonky.