I'm Vietnamese, can you help me :)?

A "coffee break" is a short time off from work in the morning. Many people drink coffee or tea or eat breakfast during this break.

"Eternal" means everlasting or lasting forever.

Put together, it means something like you're employed, but you're always on break, that is, you never actually work.

There may be a book or play with that title, but if so, I'm not familiar with it.