YOU SAID:
he hates to make brownies while on the toilet he is too busy
INTO JAPANESE
彼はトイレにいる間ブラウニーを作るのが嫌いです
BACK INTO ENGLISH
He hates making brownies while in the bathroom
INTO JAPANESE
彼はトイレにいる間にブラウニーを作るのが嫌いです
BACK INTO ENGLISH
He hates making brownies while in the bathroom
You've done this before, haven't you.