YOU SAID:

the only time of the week when goofing off is mandatory

INTO JAPANESE

間抜けが必須の唯一の時間

BACK INTO ENGLISH

The only time that stupidity is essential

INTO JAPANESE

愚かさが不可欠である唯一の時

BACK INTO ENGLISH

The only time when stupidity is essential

INTO JAPANESE

愚かさが不可欠な唯一の時

BACK INTO ENGLISH

The only time when stupidity is essential