I've been calling it the bat cold since it's from bats and 4 human coronaviruses are responsible for causing common colds. Supposedly it's related to SARS and structurally similar but doesn't seem to share very many features regarding symptoms or transmission so people have been calling it COVID-19 and not its other official name. Calling it the "Wu Flu" reflects not taking it very seriously and seems to be a lot of how we got in this mess even if "bat cold" sounds like a cold that mutated inside of Batman.