How come?

Friend: Hey how come you always get this kind of dudes ah? sad you know.
Me: Dont know la. Probably I would have cheated or dumped some guy in my last birth, so now suffering la.
Friend:wah so chim ah.I dont understand la. Why you so smart ah?
Me:Aiyah, where got smart. Its called the cycle of karma. Whatever you do, you have to face the consequences. And I am still a human now cause I am trying to get rid of those sins I did in my last birth. Its complicated la dude, but its like a cycle la.
Friend:Oh. Like you do bad to people, you get it back la.
Me:ah ya la, something along those lines la.
Friend: Wah! eh, but you still smart la.
Me: I swear I will kick you.
Friend: hehe! smart la. dont need to be paiseh.
Me: eh, going out right. go go.
Friend: funny la you.
Me: *silence* okay go.