YOU SAID:

A doofus is a dingus and a dingus is a doofus

INTO JAPANESE

間抜けは、dingus と、dingus が間抜け

BACK INTO ENGLISH

Goofy is goofy dingus and dingus

INTO JAPANESE

グーフィーは間抜けな dingus と dingus

BACK INTO ENGLISH

Goofy is goofy dingus and dingus