Eat your heart out
Meaning
Feel intense jealousy or admiration.
Usage
Used when boasting humorously.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Medieval notion of grief expressed metaphorically.
Used in colloquial boasting since the 19th century.