I would like to know what the professors rational was and what he said during the night.   Costuming can mean many things.  

But why a person would even think to wear black face is curious?  Was he Eddie Murphy as the Nutty Professor?(lab coat)   I have no idea of what his motive/intention were, but I'd like to know before I pass judgement.    Was it a mistake, really stupid, satire, bad judgement, racism...........???