YOU SAID:
Your granny's mom is kinda thick
INTO JAPANESE
おばあちゃんのお母さんはちょっと太いです
BACK INTO ENGLISH
Grandma's mom is a little fat
INTO JAPANESE
おばあちゃんのお母さんは少し太っている
BACK INTO ENGLISH
Grandma's mom is a little fat
You've done this before, haven't you.