That would be cockyness (is that even a word? :D)
But explaining it shortly, the person who think's he's best in everything an thinks that everyone else don't know anything.
Couple of those persons I know, and I'm not friends with them. I just don't like it :)
Well then, what's good in you??
This is what get's difficult in my part, becouse I really can't tell myself what's good in me.
one thing is that I'm humouristic, and I can take jokes very good, even harsh jokes about me don't matter.
for example; I'm quite thin and I don't have any big muscles, so I'm called: "tikku" (= stick) sometimes. :)