1. the action of somone acting in a way, or doing an action with the intent of seriously disturbing another person(s). (simplified; the action of a mindfucker doing what he/she does best)
2. A piece of artistic work (paintings,
music, drawings, motion pictures, animations) which cause the
individual observing it (intentionaly or unintentionaly) emotional distress, or radicaly changes their ideas/beliefs about/in something. (a good example of this is the entire series of neon genesis evangelion, and it's movies)