...it's called Cordination...or lack thereof.
Not that I watch a whole lot of girls games, but the little I see, many girls don't seem to be able to move their feet quick enough to actually get good guarding postion and the oncoming dribbler is not skilled enough to dribble around their opponent...thus, a collision.
Please don't get your feelings hurt ladies...God made the boys more cordinated so they could "hunt and gather"...I guess the girls had to get something, so they got the brains...or something like that.
