YOU SAID:
I didn't miss your impertinence.
INTO JAPANESE
私はあなたの失礼を逃しませんでした。
BACK INTO ENGLISH
I did not miss your excuse.
INTO JAPANESE
私はあなたの言い訳を逃しませんでした。
BACK INTO ENGLISH
I did not miss your excuse.
That didn't even make that much sense in English.