Yuca or Yuka has been used as a semi disrespectful term referring to Metal and Rock music

Rock music

Rock music is a genre of popular music that developed during and after the 1960s, particularly in the United Kingdom and the United States. It has its roots in 1940s and 1950s rock and roll, itself heavily influenced by rhythm and blues and country music...

 derivations and their followers (called "Yuqueros"). The term is used in Latin American countries, thought most popularly in Venezuela

Venezuela

Venezuela , officially called the Bolivarian Republic of Venezuela , is a tropical country on the northern coast of South America. It borders Colombia to the west, Guyana to the east, and Brazil to the south...

.

The origins or relationship between the term and the Cassava

Cassava

Cassava , also called yuca or manioc, a woody shrub of the Euphorbiaceae native to South America, is extensively cultivated as an annual crop in tropical and subtropical regions for its edible starchy tuberous root, a major source of carbohydrates...

plant are unknown.

Originally used as a disrespectful term—which was largely related to the image of an unwashed, pierced, or tattooed person—it has in recent years been accepted by the Rock community as a defining term and is therefore no longer considered disrespectful when used to describe members of the Rock community.