A lot of surfer slang consists of in-crowd jargon or outmoded antiques: grommet (an eager young surfer), hodad (a non-surfer; a poser), log (a heavy surfboard), Noah (a shark). But other terms that bubbled up in the surf towns of Southern California, Hawaii, and Australia in the 1950s, 1960s, and 1970s – bro, dude, Cali (for California), wipeout – are now part of the everyday vocabulary of English-speaking landlubbers who may have no idea about the words’ briny origins. One of the most widespread of these expressions, and probably the most pertinent to our interests at Strong Language, is bitchin’, an adjective or interjection meaning “excellent,” “cool,” or “admirable.”
It took a long time for bitch and its derivatives to evolve from veterinary noun (Old English: “female dog”) to taboo slur (for a woman c. 1400; for a man c. 1500) to slightly taboo verb (early 1900s: “talk spitefully”; early 1930s: “complain”) to a word so cheerily inoffensive that it’s used in brand names that are prominently displayed in mass-market retail outlets like Costco. Along the way, bitch begat dozens of slangy spin-offs, most of them U.S. in origin and mostly pejorative, that include bitch bath (perfume instead of soap and water), bitch box (loudspeaker), and bitch light (a twisted rag soaked in grease and used for illumination).