Slang for matting between the roots of adjacent locks. If left alone and unseparated, congos can form double-headed dragons. The origin on the word is uncertain. Some speculate that it came from the term “bongos”—a shortening of the term “bongo locks” in the 1970s, which was invented to describe the large freeformed locks of reggae stars such as Bob Marley. Some individuals encourage congos and welcome the natural combination of locks, while others get them unintentionally and pull them apart to prevent combination.