eat away at sb
to make someone feel more and more unhappy or worried
People talk about my glory days but the bad moments still eat away at me.
[英]eat humble pie
It looks like I was wrong, and I'm going to have to eat crow.
eat somebody alive
to criticize someone very angrily
If I eat my words, I am going to be eaten alive.
For here or to go?
I'd like a cheeseburger to go.