Ding Dong

Ding dong is the sound that a doorbell makes when someone presses the button. When someone comes to visit your home, they press the button and it makes a ding dong sound so you know that someone is at the door and you can go answer it. The ding is the first sound that the doorbell makes and the dong is the second sound. It's like a little song that the doorbell sings to let you know that someone is there. Sometimes, people also say "ding dong" as a silly phrase or to make a joke.