YOU SAID:

OH MY GOSH, THIS IS SO ANNOYING.

INTO JAPANESE

ああ、なんてことだ、これはとても迷惑だ。

BACK INTO ENGLISH

Oh my god, this is very annoying.

INTO JAPANESE

なんてこった、これはとても迷惑です。

BACK INTO ENGLISH

What a mess, this is very annoying.

INTO JAPANESE

なんてめちゃくちゃ、これはとても迷惑です。

BACK INTO ENGLISH

What a mess, this is very annoying.