YOU SAID:
When Johnny poops himself it hurts.
INTO JAPANESE
ジョニーがうんちをするとき、それは痛いです。
BACK INTO ENGLISH
It hurts when Johnny poops.
INTO JAPANESE
ジョニーがうんちをすると痛い。
BACK INTO ENGLISH
It hurts when Johnny poops.
You've done this before, haven't you.