YOU SAID:
The coolest dude in this room is you.
INTO JAPANESE
この部屋で一番クールな男はあなたです。
BACK INTO ENGLISH
You are the coolest guy in this room.
INTO JAPANESE
あなたはこの部屋で一番クールな人です。
BACK INTO ENGLISH
You are the coolest person in this room.
INTO JAPANESE
あなたはこの部屋で一番クールな人です。
BACK INTO ENGLISH
You are the coolest person in this room.
That didn't even make that much sense in English.