YOU SAID:
my older sister used to eat her own poo
INTO JAPANESE
私の姉は自分のうんちを食べていました
BACK INTO ENGLISH
My sister was eating her poop
INTO JAPANESE
私の妹は彼女のうんちを食べていました
BACK INTO ENGLISH
My sister was eating her poop
Yes! You've got it man! You've got it