Really Pissing Me Off

Yesterday at work my new co-worker said something to me that just set me off. All night long I was so mad it was like spiting fire. OK, it sounds dumb, but it really is just the wrong thing to say to me. I had questioned him about some shelving he bought and he got all defense about it. I walked to my office and he followed me and started arguing with me about it. Talk about insecurity. Next thing I know he tells me to "Just stay in the kitchen". WHAT THE F*CK. He then informed me that my kitchen was my office. OK. I just spent my day doing things that are HIS job and he's going to tell me to stay out of the shop. I DON'T THINK SO. I informed him that I am the Manager, and I will go where ever I please. I will be discussing the whole thing with my supervisor today. We'll see what happens.