I think it's like this, but I could be totally wrong:

Negative statements taken personally as you the player
getting dissed instead of your character getting dissed.
I've played some guys that if they got dissed I'd feel like
I scored bonus points because they were meant to be kind
of a ####. Some though were so close to my own personality
that if they got dissed I'd be like Hey that was just hurtful!
I should play more evil I'd have taken the statements like
murphy got and ran with it like you wouldn't believe. Like
cowering or cringing anytime anyone in range showed up, then
maybe a single hit and run like a mad man for cover.
If called lazy become lazier, if called psychotic become
MORE psycho, stuff like that. Go so far that years later when
someone means to use the word or phrase that described you they
just say your characters name instead and everyone knows except
the newbie who asks So what do you mean he is so Flathielly?
Okay maybe I'm too much 'supporting cast' for that, but hey
a man can dream right? *rofl*