Rat(Z)

Fred on a stick wrote:
Hmmm. I think perhaps our difference lies in how one uses or abuses the term
"rat." I don't condemn Zirbel for turning in another person's name, just as
I would not condemn one of the parties in a prisoner's dilemma. I don't
consider the term "rat" to be particularly pejorative -- I simply consider
it to be descriptive of one's behavior. It's denotative, not connotative.

http://www.ncbi.nlm.nih.gov/pubmed/8806030