There is also an alternative interpretation of the term, meaning the 'life of gash' - whereby someone focuses on scoring gash and uses any means necessary to get gash. Someone like this may be known as a gash hound.
Abdul: Dude, it's non exsistent.
Jack: Did you get some gash last night?
Thomas: No, I need to get some better chat up lines and improve my gash life, I'm getting desperate.