'The Bird'

You know when someone cuts you off, you show them a lovely finger? Or someone in another car shows you their lovelyfinger? I bet you all you don't know how 'The Bird' originated. If you do, go away, and come back tomorrow or another date when I have something to say. If not, come closer, it's Story Time!
Alright, long ago in the Middle Ages, there were archers. And the archers used their undex finger, and their middle finger to pull back the arrow, and shoot. Well, when the archers would get captured, the opponent would cut off those fingers. Leaving you a useless mass of flesh that could once shoot arrows. So, when the other archers were ready for battle, they stuck up those two finger,s telling the other side that they didn't catch them, and that they would soon be dead. We, being lazy as the centuries grew longer, deleted the index finger, leaving only the middle.
And that children is the history of 'The Bird'.