I once had lunch with some friends, and a friend of a friend was boasting about how being a champion Taekwondo fighter and all the trophies won and having just come back from overseas and smashing the competition etc. I tried to ignore it, but our lunch conversation just became
dominated by this person's boasting. So I offered a friendly challenge -- we went back to our mutual's friend's house, in the garage... as soon as the fight started, I just waltzed right in, grabbed the throat and dropped my opponent to the ground. Fight was over in one move. And even after being dropped, I kept gripping the throat and continued squeezing -- my opponent got so desperate the counter technique was to dig finger nails into the back of my hands to try and scratch me off. It didn't work. Silly bugger wouldn't tap out or anything either... so I eventually let go.

I don't necessarily mind arrogant fighters, so long as they have the
skill to back their arrogance! (like say Mohammed Ali!)