Cách sử dụng
The expression "rap somebody on/over the knuckles" means to reprimand or scold someone for doing something wrong, often in a strict or harsh way. It is usually used when someone has done something that goes against rules or expectations, and they need to be corrected or disciplined. The phrase comes from the idea of hitting someone's knuckles as a form of punishment, which was common in the past. It is now used figuratively and generally does not involve physical punishment.