joondalup means in slang: The northern suburbs are home to many shops and apartments. There is also an industrial area, a train station, and some of the largest faggots in Perth. Train rats, or the derros as they’re known, roam freely throughout the city. They often share a goonbag with 20+ people at “Turtle Pond”, which actually is joondalup campus. They are the worst kind of rats. Joondalup criminals live at the bottom of society. (in Slang Dictionary, added by Haiden Skinner)