YOU SAID:

hey err you are goofy. You knew that right?

INTO JAPANESE

ねえ、あなたは間抜けです。知ってましたよね？

BACK INTO ENGLISH

Hey, you're an idiot. You knew that, right?

INTO JAPANESE

おい、バカだな。それは知っていましたよね？

BACK INTO ENGLISH

Hey, you're an idiot. You knew that, right?