Want your help guys.

What do bạn guy say about this kinda guy ..
Here:
i was sitting alone on stairs ,
nghề viết văn something then , one guy came
(i don't know who he is ,i never saw that guy arond )
đã đưa ý kiến :
guy: i'll hit bạn i left him at once ..
and guy shout at me !
I Gonna Hit You!! bạn want some!!
and I đã đưa ý kiến :
I cú đấm bạn too.
he: bạn have dare!?!
i said: yes, if bạn cú đấm then after that i gonna cú đấm bạn too..
He: Don't mess with me .
We Are Guy ! I CAN DO ANYTHING .. (i know what he meant bởi that)
why some guy act like this?