Definition
A "sucker punch" is an unexpected and unfair blow, usually delivered when the victim is unaware or defenseless. It's a cowardly act, violating the principles of fair fighting. Think of it as the opposite of a fair fight. It's intended to incapacitate the victim before they have a chance to react. A sucker punch is often motivated by malice or a desire to gain an unfair advantage. It's seen as a dishonorable act.