knock some sense into

The phrase "knock some sense into" is an idiomatic expression that means to make someone think more rationally or become more sensible by forcefully or directly confronting them with arguments, criticism, or sometimes even physical force. It suggests the idea of using some form of shocked to make a person realize their mistake or change their behavior for the better. However, it is important to note that it is a figurative expression and should not be interpreted literally as advocating violence.