Code switching originally was a term in linguistics to refer to the same speakers using multiple languages (or multiple registers of the same language, etc.) in

Code switching originally was a term in linguistics to refer to the same speakers using multiple languages (or multiple registers of the same language, etc.) in a single conversation, which is probably why imbnwa is confused about the application here. In the last few years it's been picked up by the broader social science world to describe people using different modes of speech in different situations, which is how you're using the term--e.g., using a "white" voice, using a "straight" voice, etc.