The root for nomen in Latin means "name."
Memoir is a personal legacy written so we can call it a historical source but not document. It is not an evidence, a report or not even a record. It is more like an autobiography or a biography from memorial times. It is a legacy written by a person for a person.
Answer:
I don't think it <em>means</em><em> </em>anything. The boy may just be trying to mess with you in a friendly way.
Hope this helps, though. :)
