Overstatment

Overstatement- Deliberate exaggeration to prove a point.

"I told you like a billion times ben to stop exaggerating"

"Im so hungry, I could eat a wagon wheel!" - Taken from a New England Patriot Fans message board

http://www.patsfans.com/new-england-patriots/messageboard/15/139457-im-so-hungry-i-could-eat-wagon-wheel.html