How can I hit the "Boomerang Snake" in tennis?

Umm, if you're talking about something you saw on Prince of Tennis, let me just say nothing on that show is real. If you aren't, then the only thing I can think about is a shot some pros hit on the run and the ball curves in mid air and lands in the court. (last shot in this clip a href="http://www.youtube.com/watch?v=u_rKON8iR2c)" rel="nofollow"http://www.youtube.com/watch?v=u_rKON8iR…/a Basically, it is usually hit on the run because when you're on the run you have some natural pace from your running. When you're just standing, you don't have the same momentum. It's basically a lot of a topspin-sidespin combination. A difficult shot and you almost need to be in the perfect situation for it.