Answer:
This an example of hyperbole.
Step-by-step explanation:
Hyperbole is characterized by exaggerated statements or claims not meant to be taken literally,......
ex.: I've told you to clean your room a million times!
ex.: I am so hungry I could eat a horse.
ex.: I have a million things to do today.
...while an idiom is a group of words established by usage as having a meaning not deducible from those of the individual words.....
ex.: It costs an arm and a leg.
ex.: Would you cut me some slack?
ex.: She rubbed me the wrong way.
Can you see the difference??