Forcing people to do what you want them to do under a disguise so that neither do they judge you or hate you defines Passive Aggressive behavior in simple terms. Deemed by psychologists as an identity disorder, a person suffering from it displays classical behavioral traits. These traits are often mistaken as general attributes of stress. However, the reality is far more different.
When asked for a general opinion regarding a particular thing people suffering from it are often unwilling to express their viewpoint. Or in some cases as it is observed people tend to contrast the way they behave with respect to what they speak in turn confusing everyone around.