fly in the buttermilk

colloquial

(colloquial) A black person in a predominantly white group of people.

Japanese Meaning

白人が多数を占める集団の中にいる黒人を指す、口語表現（差別的なニュアンスを含む）

At the corporate retreat, he felt like a fly in the buttermilk among his colleagues.

会社の合宿で、彼は同僚の中で白人が多数を占める集団の中のただ一人の黒人として居心地の悪さを感じた。

Sense（1）

(colloquial) A black person in a predominantly white group of people.

flies in the buttermilk

（ plural ）