I'm afraid Wikipedia disagrees with you. A golliwog was a black African character in an English children's book. Golliwog dolls were extremely popular. There is no mention of wog being a shortened version of golliwog. Though one might think so.Actually, the term 'wog' was short for golliwog, a racist term for Indians. When they later realised how disgusting this sounded, they invented the acronym as a shore story. The term for this is a backronym, ie, it didn't used to be an acronym, but one was created afterwards to explain it.