Best Vending Machine Ever!

Jus finish my calculus studies at the dining hall.. During my studies i bought a drink from the vending machine. When the drink that i bought fell down, it hit another drink so 2 two drinks came down. Buy 1 get 1 free lol. Thats not the end of story.. An hour later i saw a group of Americans they went to that machine and start buying drinks and before they input the serial for the drink they give it a gd kick and true enough 2 drinks came down again. But it gets annoying after sometime cause those americans keep kicking and kicking >.<

But what they didnt know is that there is CCTV jus above their head lol >.<