YOU SAID:
What in my grandmother's biscuits is that!
INTO JAPANESE
私の祖母のビスケットの中で何ですか!
BACK INTO ENGLISH
What's in my grandmother's biscuits!
INTO JAPANESE
祖母のビスケットには何が入っています!
BACK INTO ENGLISH
What's in my grandmother's biscuits!
That didn't even make that much sense in English.