YOU SAID:

“He was a prisoner of his own eyebrows.”

INTO JAPANESE

「彼は自分の眉の囚人でした.」

BACK INTO ENGLISH

"He was a prisoner of their eyebrows."

INTO JAPANESE

「彼は自分の眉毛の囚人でした.」

BACK INTO ENGLISH

"He was a prisoner of their eyebrows."