A hyperbole is a literary device wherein the author uses specific words and phrases that exaggerate and overemphasize the basic crux of the statement in order to produce a grander, more noticeable effect. The purpose of hyperbole is to create a larger-than-life effect and overly stress a specific point. Such sentences usually convey an action or sentiment that is generally not practically/realistically possible or plausible but helps emphasize an emotion.
In life, we actually spout out exaggerations and hyperboles without even knowing.
Other Examples: “I am so tired I cannot walk another inch” or “I’m so sleepy I might fall asleep standing here”.