The meaning of 管を巻く


I stumbled upon this 管を巻く, and looking up, it says that in English, it meant
'to grumble over one's wine cups.' But I still did not understand what it
means. Can someone help to explain?




> 「管{くだ}を巻{ま}く」

is an idiomatic expression meaning:

> "to talk incoherently (when drunk)"
>
> "to grumble on and on (when drunk)"

I might add that repeating the same things over and over is often the
characteristic of 管を巻く-ing.

