YOU SAID:
my mu mu mum has diarrhoea in her pee pee
INTO JAPANESE
私のお母さんはおしっこで下痢をしました
BACK INTO ENGLISH
My mom had diarrhea with a pee
INTO JAPANESE
私のお母さんはおしっこで下痢をしました
BACK INTO ENGLISH
My mom had diarrhea with a pee
That didn't even make that much sense in English.