Umeru Ana English | Oji-san De

So yeah, “filling the hole with oji-san” is a joke. But the fact that it works as a joke… that’s the real horror.

In some online Japanese stories, manga, or game discussions, when a plot requires dangerous manual labor—clearing minefields, repairing reactors, filling trenches under enemy fire, or plugging a hole in a flood wall—a character will suggest: “Just use oji-san.” Not young heroes. Not expensive robots. Just expendable, low-wage, middle-aged men. No names. No backstory. No funeral costs. oji-san de umeru ana english

At first it sounds silly. But then you read the context. So yeah, “filling the hole with oji-san” is a joke