Some deviant behavior is illegal. Some is just annoying. 'Deviant' covers a lot of territory. For example, a California law classifies homosexual behavior as deviant, but homosexuality is not illegal. Breaking into drug stores is deviant, and is definitely illegal… Full Answer
Primary deviance is when someone violates a social but doesn't get labeled for and the do not find themselves deviant. Secondary deviant is when authorities label an individual and the person had to accept the fact that they are deviant.
Deviant behavior means that they separate themselves from society's norms and develop their own way of living. so anorexia is deviant because all of society (most, anyway) says that we should eat and eat healthy.