YOU SAID:
Shut your mouth! You are mean to my sister!
INTO JAPANESE
黙れ!あなたは私の妹に意味があります!
BACK INTO ENGLISH
Shut up! You make sense to my sister!
INTO JAPANESE
黙れ!あなたは私の姉に理にかなっている!
BACK INTO ENGLISH
Shut up! You make sense to my sister!
That didn't even make that much sense in English.