prologuer
A person who gives an extensive and usually unnecessary amount of background information to tell a simple fact or story thereby causing a simple matter to become lengthy and complicated.
Example:
Geez, my cousin is such a prologuer. She called to ask a simple question and started out in 1983. She knows how to make a short story long.
Geez, my cousin is such a prologuer. She called to ask a simple question and started out in 1983. She knows how to make a short story long.