You have to tell him that playing tricks on people is bad behavior. Don't make it smaller. If you always let it go, it may lead to a big mistake in the future. In fact, all children understand this truth. You should educate him not to leave him alone. Moreover, many children will play practical jokes in order to attract the attention of adults. As a parent, it is necessary for you to reflect on whether you have cared about your children at ordinary times.