Why middle finger?

Why is middle finger used as scolding people? Any history behind it? Any meaning?

pt our ur middle finger... wht does it look like? Laughing

Who started using it to scold people?

You naughty huh.

Anyone knows?

this is my original pix, with my (c) at bottom. Laughing

Pictures competition?

+1 Mr. Green

then y dun u ask y cheebye is used to scold ppl
y ppl ask ppl to fuck your mom not your dad? stupid sia u
_|_

Hmmmm…. what a question…

Ya, why also. I never think of that. Now got some new questions. Why why why? Please tell me why.