Geddoe is frankly not even going to dignify that first part with a reply. It's really not worth the bother with such egotistical types. Especially those who lack the perception--or desire to make the effort--to assess a situation before diving in.

"Then that just means you jumped into something without having a clue what you were doing or dealing with. Keep that up and of course no one would be willing to talk reasonably."

He has to treat any unexpected attempt to get at True Lightning as an attempt on his life. Because ordinarily, that's precisely what it is, in effect. He wouldn't fault a stranger for not knowing what the rune is, but acting so carelessly? Yeah, that had been entirely uncalled for and unnecessary, and the whole 'I did nothing wrong' attitude sure isn't endearing him.