YOU SAID:
Hey zach what are you doing
INTO JAPANESE
ちょっとザック何してるの
BACK INTO ENGLISH
What are you doing?
INTO JAPANESE
なにをしているの?
BACK INTO ENGLISH
What are you doing, man?
INTO JAPANESE
なにをしているの?
BACK INTO ENGLISH
What are you doing, man?
That didn't even make that much sense in English.