q
It is code for 'press the Google Button' lol
LOL!
Well, one day when you are a little kid you figure out that people whistle by blowing, so you sit down and blow and blow until you get that one little chirp. AHA! Maybe you go on to learn different styles, and maybe you don't. But the origin is always the same.
You misunderstand my question. How has the staccato high-low whistle become a way for adolescent males to single attraction to a female?
Think about it. It is a loud piercing noise that gets attention.