YOU SAID:
Yadda yala dada! It is good day to be not dead!
INTO JAPANESE
ヤッダヤラダダ！死ななくて良い日です！
BACK INTO ENGLISH
Yadda yaradada! It's a day you don't have to die!
INTO JAPANESE
ヤダヤラダダ！死ななくてもいい日だ！
BACK INTO ENGLISH
Yada Yara Dada! The day you don't have to die!
INTO JAPANESE
ヤダヤラダダ！死ななくても済む日！
BACK INTO ENGLISH
Yada Yara Dada! The day you don't have to die!
That didn't even make that much sense in English.
