There are 12 kinds of black people and none of them want to mug you

This classic "backboner" watches TV on his break.

A consultant for BET has divided African-Americans into twelve demographics. According to the Starcom Mediavest Group, 20% of blacks are "backboners," which includes nurses, postal workers and bus drivers. Backboners tend to "get things done." "Devouts," who are religious non-consumers with modest aspirations, comprise 12% of the black population.

Starcom's remaining 10 demographics are considered a trade secret. Until now.