Want your help guys.

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