Pun: “The humorous use of a word or phrase so as to emphasize its different meanings, or the use of words that are alike or in sound but different in meaning; a play on words.” Webster´s Unabridged Dict. 3.0
--I tried to sue the airline for losing my luggage. I lost my case.
--When the semi-colon broke grammar laws it was given two consecutive sentences.
--Why did the scarecrow win a Nobel Prize? For being outstanding in his field.
--What kind of tea did the American Colonists want? Liberty.
Retruécano: “Chiste conseguido manejando palabras parónimas (de forma parecida y distinto significado).” M. Moliner.