Cách sử dụng
The expression "rat out" means to tell on someone who has done something wrong or to reveal their secrets to others. It is often used in informal or slang language and can have a negative connotation. For example, if someone tells a teacher that their classmate was cheating on a test, they are "ratting them out." It is important to consider the potential consequences before using this expression, as it could damage relationships and trust.