Sarcasm n. : A keen, reproachful expression; a satirical remark uttered with some degree of scorn or contempt; a taunt; a gibe; a cutting jest.

Example:
Sarcasm the lowest form of wit demands the highest functions of the brain?

Taxonomy
Sarcasm mark, free encyclopedia, humor, language, ridicule, exclamation mark, brackets, Colonel, Torrens, bitter, Origin, search, free dictionary, mock, wound, contempt, English, Tom piper.

Defination from the web:
Sarcasm is a form of humor that uses sharp, cutting remarks or language intended to mock, wound, or subject to contempt or ridicule, generally ... Dan Hurley (June 3, 2008), The Science of Sarcasm (Not That You Care), New York Times, http://www.nytimes.com/2008/06/03/health/research/03sarc. ...