Sarcasm is called the form of humor in which it seeks to ridicule or humiliate, in some way, the recipient of the message, through the use of irony in its most cruel expression. Bitter ironic sayings are also called in this way, with which one seeks to raise a complaint or, well, that is against the ideas discussed. Hurtful comments and heavy mockery, sometimes blurring the line that separates you from vulgar insults, sarcasm is, in Oscar Wilde's words, "the lowest form of humor, but the highest expression of wit."
This word comes from the Latin word "sarcasmus", and this, in turn, from the Greek "σαρκασμός" (sarkasmos), which can be literally translated as "lip bite" or "lip bite". This, as a humorous expression, is born from irony, those phrases or sentences that, uniting the tone of voice and the corporal expression, imply the opposite of what it actually refers to; an example of this would be those people who write in public toilets "do not write in public toilets." Sarcasm retains much of the ironic essence, but covers him with a different objective: to hurt a little whoever receives the comment.
In oral communication, sarcasm can be interpreted in different ways and there are a number of factors that can modify the interpretation. In some cases, if ideas, which go against the grain, are not expressed with a certain degree of obviousness, it can lead to confusion. In addition to this, the use of sarcasm can vary from person to person, due to its cultural background.