It depends. I am usually nice unless it's an asshole.

Let me show you the last one went.

Me: Hello.
Young Black Lady: I know what you did.
Me: What?
YBL: I'm gonna smurf you up!
Me: Well, smurf you. I have no idea who you are.
YBL: You know she has AIDS, bitch.
Me: I have no smurfing idea what you are talking about.
YBL: I hope you get AIDS.
*Click*