The act of being an absolute, over-the-top douchebag, using excessive levels of dickish behavior accompanied by a complete and utter disregard for human decency.
The theory that douchebags get more chicks as they get doucheier. The douchebags go to more parties as they get doucheier which gives them more opportunities to get chicks. However, there is a point where one can get overly douchey and none of the chicks like him. Also, chicks tend to go out with douchebags more often because the doucheier the douchebag, the easier he is to whip (usually).