I've been carping about this for years

MedicalPost.com: THE LAST LAUGH: Really loony toons: "Tweety and Sylvester pose an interesting diagnostic dilemma. At first one tends to label Tweety as the victim and Sylvester as the victimizer. But look at what happens in a typical interaction. Tweety maintains a pose of innocence while engineering all sorts of horrible events for Sylvester.
The cat falls from great heights, is attacked by aggressive canines and otherwise is beaten, maimed and subjected to all sorts of negative life experiences. Who is really the victim here?
Tweety is a typical passive aggressive personality. Unfortunately, this useful term seems to have been engineered out of the present DSM-IV, so I can't give it a code number.
What about Sylvester? He seems to be a co-dependent in this sick relationship. Why doesn't he just leave, or seek counselling to escape this cycle of violence? Alas, he could be a little better endowed in the brain department (witness his mistaking a baby kangaroo for a mouse). "