I've told you a million times! is an example of hyperbole.
The boy roared like a lion, is an example of an idiom.
Faster, higher, stronger, is an example of the rule of three.
It's raining cats and dogs!
Is an example of an idiom
Is an example of a rhetorical question
Is an example of a pun
Life is a rollercoaster! is an example of a metaphor.
