Jumps into a thread where everyone is having a good, congenial, in depth and interesting conversation, declares that everyone else is wrong and he alone is right, based on the argument of “of course”. Doesn’t even understand that we are more or less in agreement on the point, just wants to shove in everyone else’s face just how much more right he is than everyone else.
I guess his father probably once didn’t see a UFO, so that gives him the insight and experience to simply know better than anyone else.