What are some examples of commonly used hyperboles?
"I'm so hungry I could eat a horse!"
"He's older than the hills."
"I've told you a million times already!"
"I have a million things to do today."
"We've been waiting for centuries/ages now."
"He never stops talking."
More examples here: http://examples.yourdictionary.com/examples-of-hyperbole-for-kids.html