YOU SAID:
Yo mama was so old she was her own grandma.
INTO JAPANESE
よママはとても年をとっていて、自分のおばあちゃんだった。
BACK INTO ENGLISH
Yo Mama was very old and was her own grandma.
INTO JAPANESE
ヨー・ママはとても年を取り、自分のおばあちゃんでした。
BACK INTO ENGLISH
Yo Mama was very old and her own grandmother.
INTO JAPANESE
ヨー・ママはとても年を取り、自分の祖母でした。
BACK INTO ENGLISH
Yo Mama was very old and her own grandmother.
That didn't even make that much sense in English.