Sarcasm

-Sarcasm is simply a statement that utilizes irony either for purely comical purposes or to indirectly convey one’s contempt towards someone or something.  Although sarcasm can be lighthearted (falling under the “purely comical” umbrella), it often carries serious, and potentially dark, undertones.  Unlike other rhetorical devices such as repetition, hyperbole, and zeugma, sarcasm relies primarily on both the context of the statement and its vocalization to be effective. or else its intended effect could be lost on the audience.
-A visual example of sarcasm can be seen in the above image from the NBC sitcom Parks and Recreation. Here, Ron Swanson can be seen in front of the famous Big Ben clock, sarcastically remarking that "We don't have [a clock] in America". The humor in this statement is meant to mask (or creatively express) Ron Swanson's opinion on the tourist attraction: it is not a big deal and should not be treated as such.
-A cinematic example of sarcasm can be found in the 1994 film Pulp Fiction during a confrontation between hitmen Vincent Vega and Jules Winfeld and a small group of young men who had gotten themselves way over their heads by scamming a valuable briefcase away from mob boss Marsellus Wallace.  While one of the latter, Brett, attempted to talk their way out of the predicament they got themselves in, Jules nonchalantly shoots Brett’s friend.  After murdering him, Jules then turns to Brett and says, “I’m sorry, did I break your concentration?”  This response can be classified as sarcastic, as Jules was clearly unapologetic about his previous action and wanted to send a message to the young men that no words could possibly be said that would prevent their imminent execution.