Any of the non-playable characters on the player's team or side in a first or third person shooter video game. Their sole purpose is to take point and thin the ranks of the enemy prior to the player's advance into potentially hazardous areas or situations. First referenced in South Park: Bigger, Longer & Uncut. "Operation: Get Behind the Darkies"

The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands).

Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.”

There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.

A black person.

1. a fond name for persons of the African genotype;
2. A bowell movement (uk-regional).

A brand of toothpaste displaying an African-American male with very black skin and very white teeth on the tube. Discontinued in the 1980s.