The alcoholic aunt - everyone has one. Usually found listing sideways on the couch at family gatherings, trapping younger relatives with an iron grip on the arm and imparting "some things about life no one else has the balls to tell you." This species is particularly abundant around the holidays.
Don't leave me alone at the party tonight, my Auntoholic Miriam is coming to visit and she always wants "girl talk" with me. (Shudder)