To create a whistling noise like that of blowing over a bottle, except using another
person's shit hole. Thus a
shit whistler. Can be used to imply someone is of a
homosexual persuasion.
Mike in a
childish voice up the stairs: "I've
just turned all the items in your room upside down..."
James runs to his room...
James: "Ahh mannn! You dirty little
shit whistler!!"