You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: ON THE COAST 
Clue: A 19th c. "Committee of Vigilance" fought the crime that gave part of San Francisco this North Africa-inspired nickname
the barbary coast

Category: RULERS 
Clue: In 770 this king of the Franks married Desiderata, daughter of the Lombard king Desiderius
charlemagne

Category: YOU KNOW THAT SONG 
Clue: ...not the '60s tune by The Troggs but this, Tone Loc's first top 10 hit, covering certain parts of Tone's dating life

"wild thing"