1. What does it mean?
밥친구 literally means meal friend. It can be a person you eat with, but online it also describes a show, creator, or familiar video that keeps you company during a meal.
Also written or said as bapchingu
2. The nuance
A video called a 밥친구 is usually being praised as easy, comfortable viewing. It does not necessarily have food as its subject or depict an actual shared meal.
3. Examples
“혼밥할 때 이 여행 영상이 내 밥친구야.”
This travel video keeps me company when I eat alone.
“수업 시간이 비슷해서 자연스럽게 밥친구가 됐어.”
Our class schedules were similar, so we naturally became lunch buddies.
Sources
References support the meaning and usage. Example sentences are written for NoCapWiki.