If somebody really is
good natured, they don't invite hostility and aren't involved in hostile events/incidents/arguments often (even ones they describe to others as hilarious situations). If someone is overly argumentative and does everything to excess, they are not entirely
good if they are
good at all.
The
dork claimed to be a good college
girl, but anybody with as much to run from as she had to run from must not have been entirely good, if there was any
truth to her claim of being good at all (since it was a questionable claim where evil or sinister was just as likely to be her true nature).