Oxford English Dictionary
Rhetoric. A figure of speech
consisting in exaggerated or extravagant statement, used to express strong
feeling or produce a strong impression, and not intended to be understood
1656 J. Smith Myst. Rhetorique 58 Scriptural Examples of Hyperbole‥Deut. 9. 4, Cities fenced up to heaven‥Joh. 21. 25, The whole world could not contain the books.
If I don't get these jeans, I will DIE!