A Holiday Gift Magic Trick

Not many tricks can be done over the phone.  This is one! You and your friend alternate turns, each selecting a number from 1-9.  The object of the game is to be the first to have 3 of your numbers total 15.  You have a secret strategy that lets you win much of the time. 

This trick involves a circus story and a bit of math! First view the presentation of the trick and get the story down.