pungency,
bite a strong odor or taste property; "the pungency of mustard"; "the sulfurous bite of garlic"; "the sharpness of strange spices"; "the raciness of the wine"
caustic remark,
sarcasm,
satire,
irony witty language used to convey insults or scorn; "he used sarcasm to upset his opponent"; "irony is wasted on the stupid"; "Satire is a sort of glass, wherein beholders do generally discover everybody's face but their own"--Jonathan Swift