YOU SAID:

that dummy has the dumbest food in it's dumbness tummy

INTO JAPANESE

あのダミーはその愚かなお腹の中に最も愚かな食べ物を持っています

BACK INTO ENGLISH

That dummy has the stupidest food in its stupid belly

INTO JAPANESE

あのダミーは愚かな腹の中に最も愚かな食べ物を持っている

BACK INTO ENGLISH

That dummy has the stupidest food in its stupid belly