Cách sử dụng
The expression "be off your rocker" means to be crazy or out of your mind. You can use this expression in informal situations when you want to describe someone’s behavior as insane or irrational. For example, if your friend starts believing something that is completely untrue or doing something that seems crazy, you can say “You're off your rocker, my friend.” This expression is not polite, so make sure you use it wisely and with caution.