eat one’s head off—
1. said of an animal whose upkeep costs more than it will sell for:
- That ox has been here all winter and ate his head off.
2. (coll.) eat excessively or gluttonously:
- I am not weighing in today as I just got back from New York and ate my head off while I was there.
eat someone’s head off—(coll., also: bite someone’s head off) speak to smb. in a rude and angry manner; severely criticize a person:
- I have the worst temper in the world and will eat your head off at the slightest thing.