YOU SAID:

a r e y o u t h e s t u p i d

INTO JAPANESE

r e y o u t h e s t u p 私は d

BACK INTO ENGLISH

a r e y o u t h e s t u p I d.

INTO JAPANESE

r e y o u t h e s t u p 私は d。

BACK INTO ENGLISH

It's a r e y o u t h e s t u p I d.

INTO JAPANESE

それは r e y o u t h e s t u p 私は d。

BACK INTO ENGLISH

It's a r e y o u t h e s t u p I d.