Or...
You're not as mean as everyone says.
Yes. I am. You asked me a job related question. I answered. Now go away.
Or, most recently when a new guy tried to tell me his name, in my last year of work.
I don't care what your name is.
I really don't.
Till someone's been here 6 months, I assume they're a transient and I don't have the energy to learn a name for no reason... NEW GUY!