How to pretend that parents warn people who secretly love themselves?

You can pretend that your parents sent him a short message.

Use another mobile phone number, pretend to be a parent, send him a text message in a parent's tone, tell him not to pursue my children, focus on his studies, and inform the school next time he finds anything.

Parents, formerly known as the head of the family, refer to parents or other guardians. Generally refers to the parents or guardians (natural persons) of minors. Generally refers to a child's parents or other guardians or elders. It is not a legal term, but a common name in schools.