Sure, I killed him, but not because he tried to kill me. It's not his fault he didn't know I was so awesome, right? I can even disregard the whole "lure me into his apartment where he has staged an ambush" thing. I'm a forgiving man like that.
But I can't forgive the greaser slang. The ear-bleedingly annoying greaser slang. The only time ANYONE should say the word 'daddy-o' is if they are a time traveler or, appropriately enough, quoting Back to the Future. Everyone else deserves to be nailed on a cross made of barbed wire by their balls.
Which he was.
Then I shot his hanging corpse.
What a fink.