The harsh termination of a conversation with a fool you can no longer suffer. Pronounced: A - M - F YoYo. Short and direct translation: Adios Mother Fucker, you're on your own. May be used in the presence of children as the concepts of bowling and toys are paramount in their lives - and not fool you are about or to.
Good Friend: "What should we do about Josh? He is the worst wingman ever."
You: "AMF YoYo"