Speak of the devil的意思

"Speak of the devil" or "Speak of the devil and he shall appear" is an English language idiom that means that someone has just mentioned a person, and then that person immediately makes an appearance or is mentioned again. It is often used to suggest a coincidence or to express surprise at the timing of an event. The phrase is thought to have originated in the 19th century and is a variation on the earlier phrase "Speak of the devil and he will appear," which has its roots in superstition and the belief in the devil as a real entity.