YOU SAID:
You pooped your pants.
INTO JAPANESE
あなたはあなたのズボンをうんちした。
BACK INTO ENGLISH
You pooed your pants.
INTO JAPANESE
あなたはズボンをかわいがった。
BACK INTO ENGLISH
You have pants pants.
INTO JAPANESE
ズボンがあります。
BACK INTO ENGLISH
I have trousers.
INTO JAPANESE
ズボンがあります。
BACK INTO ENGLISH
I have trousers.
That didn't even make that much sense in English.