YOU SAID:

I came in his testicals until they turned brown

INTO JAPANESE

私は彼の睾丸が茶色になるまで入りました

BACK INTO ENGLISH

I went in until his testicles were brown

INTO JAPANESE

彼の睾丸が茶色になるまで入りました

BACK INTO ENGLISH

I went in until his testicles turned brown.

INTO JAPANESE

彼の睾丸が茶色になるまで入りました。

BACK INTO ENGLISH

I went in until his testicles turned brown.