Dont be making small talk, while smoking at work under the hood!

There is a new janitor in work and he's out to get me. I only met him today, out in the smoking area. He asked me how my weekend was, casual small chat blah blah blah. Then I returned the question.
"Had a quiet weekend, credit crunch and all that, couldnt really afford to go out."
"Yeah."
"Yeah what?"
"Emm, yeah I know what you mean?"
"No you dont, you dont work in mainteance."

With this he threw his cig on the ground, threw me a dirty look while stamping on his cig. Im afraid to go for a cig and Im getting the shakes from withdrawal.