The trick goes like this. Throw a ball up to your opposite shoulder than the hand you threw from. Catch it by moving your cheek down to your shoulder catching the ball in the middle. Then drop the ball straight down into the hand below, which is now empty because the ball that it was holding was thrown up to the opposite shoulder. Just repeat this over and over.
It is a relatively simple trick. I learned the basics probably within an hour, and then got it almost every time within a few days. Be careful though, I got some bruses on my chin by catching some hard rubber lacross balls the wrong way. Maybe use bean bags when learning this...
Watch this video. It gives you a better idea of what the trick looks like. It's not DVD quality, but it's the best I have right now. Watch it in your browser, or download it to a disk. I don't really care what you do with it.
