As the real creater of the simple reply: “Your Mom” I meant for it to be a fun joke that I replied when my friend would ask “what are you doing.” Later my sister would use it for every reply she made making it quite famous around the school and around the country.
A phrase spurted out during a heated conversation. Usually has no meaning. Considered by many as a whole-hearted sentence of superiority in chat-rooms, or in an MSN Instant Messagingconversation. Generally a brainless statement.