I'm standing around at a work function. An unfamiliar guy tells a joke to the crowd around him, a very offensive joke referring to a woman's "lower lips", using some Spanish slang (although the only Spanish word I remember was 'cabeza', referring to the head). Myself, and everyone around him, goes silent and wide-eyed at the poor taste and blatant offensiveness of it, but he seems to notice nothing, just smiling like it was innocently funny.