My computer just talked back...am I nuts?? Haunted?

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Okay, I was just submitting tags on a response. I typed them in and hit submit tags. Nothing happened as I waited. So I said to myself outloud "Uh are we submitting tags here idiot or what" and hit submit again. All of a sudden the computer says... "You've been bad Mari" Well I almost fell on the floor off my chair. I don't know what happened but I know I heard it. The computer does say my name when I get mail. It says "You've got mail Mari" "Good bye Mari"But never before has it told me I was bad? What the heck was it ...is that something that can just happen randomly.. or is my computer haunted??