in two shakes of a duck's tail

Prepositional phrase

alt-of alternative

Alternative form of in two shakes

Japanese Meaning

非常に短い時間で / あっという間に

I'll have the report finished in two shakes of a duck's tail, so you can review it this afternoon.

その報告書はあっという間に仕上げますので、今日の午後にご確認いただけます。

Sense（1）

Alternative form of in two shakes