The literary device applied is this utterance is Hyperbole. It is an exaggerated statement in which the author chooses certain words and phrases in order to magnify and overemphasize a situation or event.The purpose of the author is not only to produce a reaction or a determined effect on the audience, but also to evoke a particular feeling. In other words,This literary device helps the author to convey meaning as well to convey the tone of the piece of writing in an intense and vivid manner.