Boyfriend pranks, how to fight back?

In fact, it is very bad to play tricks on people blindly. It is best to persuade him to correct his behavior. He behaves like a child in the story "Wolf" when he was a child. You should not only consider how to fight him back, but also carefully consider what makes him behave like this. Actually, this is very bad. If it were me, I would have a good talk with him. If he keeps doing this, maybe he is mentally unhealthy or has a personality defect.