YOU SAID:
My face is full of cake batter
INTO JAPANESE
私の顔がケーキねり粉がいっぱいです。
BACK INTO ENGLISH
My face is full of cake batter.
INTO JAPANESE
私の顔はケーキねり粉でいっぱいです。
BACK INTO ENGLISH
My face is full of cake batter.
You've done this before, haven't you.