Someone who wouldn't steal a pencil from work but chops up anyone who doesn't fit his idea of a moral person. Meanwhile he breaks as many moral conduct rules as the next guy only in his mind those don't matter. Someone who will judge you harshly for a slight indiscretion and will jump to conclusions from incomplete evidence.
Jo Jo - "Man Joe is a dick. He accused me of cheating on an exam because he heard it from Dave who is a chronic liar. Meanwhile Joe is eyeballing Freddie's wife when he's not around."
Terry - " Yeah. Joe is a selective moral jerk. I hope Freddie punches him in the mouth."