Bah, It's not that big of a deal. It still happens to me from time to time. I'd also start humming a song before it'd come on the radio as well. The best time was when I turned to someone and asked them what they said, they told me they didn't say anything. So I told them what I thought I thought they said and there were like "I was thinking that, but I didn't say it." That's only happened once though. I also seem to be able to tell when people lie to me.