phrase [VERB and NOUN inflect] → eat People use eat your heart out with the name of a person when they are doing something that they think the person named might be jealous of.
⇒ A limousine was sent to pick me up and deliver me to the set. Eat your heart out,
⇒ I want everyone back in Cleveland to be eating their crummy little hearts out.
COBUILD Advanced English Dictionary. Copyright © HarperCollins Publishers