While the kid is playing pool and the stick goes between her legs behind him, she turns throwing the stick. A few seconds later, he is standing there holding it again ...oops.
I must say I thought this was a slip up as well. I rewound over and over and also noticed that the stick was different than the one he had a minute earlier. After about three tries I discovered why: It ISN'T his stick the second time! When she spins around, his goes flying off and she hands him HER STICK as she stomps off! Hence the different tip and handle. And hence, NO SLIP-UP!