What do you mean a slap in the face?

It means slapping the past to wake you up, or expressing your anger.

For example, if you always talk back to your mother, your mother will be tempted to slap her in the face. I hope you can be obedient and don't always go against her. At this time, she was helpless, didn't know how to educate you, and was angry with your rebellion.

For example, my boyfriend and I were quarreling, and he deliberately said something to stimulate me. I slapped him in the face and hoped he would stop joking like that. Sometimes this sentence is used to warn others.

Whatever it is, it's better to talk about it. It's best to solve it calmly. Doing it is the most hurtful thing, and it may make this situation more and more embarrassing.