expression, godan verb (-u)
go to prison; serve a prison term
Idiomatic expression literally meaning 'to eat foul-smelling food', used to refer to being imprisoned. Often carries a rough or colloquial tone.
あいつは臭い飯を食うことになったらしい。
I heard he ended up going to prison.
臭い飯を食
I've had enough of serving time.