YOU SAID:
yo mama so stupid, she failed a survey
INTO JAPANESE
よママはとても愚かで、彼女は調査に失敗しました
BACK INTO ENGLISH
yo mama so stupid she failed the investigation
INTO JAPANESE
よママはとても愚かで彼女は調査に失敗した
BACK INTO ENGLISH
yo mama so stupid she failed the investigation
That didn't even make that much sense in English.