1. is against social morality. Third parties are often scolded.
2. A villain is not a gentleman's behavior. Say one thing in front of people, do another thing behind their backs, and play tricks. Harassment of the opposite sex is synonymous with obscenity. Sometimes it is also seen in slapstick jokes.
3. Too thick-skinned. Thick enough to lose dignity. Sometimes it is also caused by persistence for some reasons.
"Shameless" means: psychologically speaking, shame is a painful emotional experience caused by an individual's shortcomings in personality, ability and appearance, or by his inconsistency with social norms in thought and behavior. Shamed people often feel depressed, inferior, self-deprecating, self-doubt, despair, etc. And think they can't do anything about it. Public places can easily lead to shame, so the easiest way to reduce shame is to isolate yourself and keep yourself away from others. People can also reduce their sense of shame by actively trying to improve their behavior. The shame of health is the natural result of individual psychological development, and it is an important way for people to adapt to social life, improve social life and improve themselves. Too little or too much shame is unhealthy and bad for personal development. On the contrary, it is "shameless"! ! !