If I dont like someone, I'm not afraid to say it.
I'll start arguments just for fun (politics ones are the best).
In my Politics class in school, I'll take ridiculous viewpoints just to ::Dolphin Noise:: people off even though I know the viewpoint is wrong (such as The O-Zone layer is the environmentalists Santa Claus [oh man, I got so many people annoyed that day, it was great
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If someones boring me, I'll start talking about some ridiculous topic just to get them to leave. (Ex. Friend was on the phone, we had nothing left to say, other person didnt want to hang up and I didnt want to be rude, so I started talking about buying an encyclopedia set. That got them off the phone quick)