YOU SAID:

This is not cool dude what are you doing

INTO JAPANESE

これは男はクールではないあなたは何をやって

BACK INTO ENGLISH

This guy is cool but what do not you

INTO JAPANESE

この男はクールがないか

BACK INTO ENGLISH

This guy is not cool?

INTO JAPANESE

この男はクールではないですか。

BACK INTO ENGLISH

This guy is cool or not.

INTO JAPANESE

かどうか、この男はクールです。

BACK INTO ENGLISH

Whether or not this guy is cool.

INTO JAPANESE

かどうかこの男はクールです。

BACK INTO ENGLISH

Whether or not this guy is cool.