Two Aussie sisters, Viviene and Lily, like to prank each other. A lot. And thankfully for us, they also like to record each prank and stick them up on YouTube for the world to enjoy. Younger sister Lily has more of a dash and prank style, while Viviene sets up the long con pranks perfectly. We're Team Viviene all the way for this Mentos and Diet Coke prank alone. The sheer terror on Lily's face? Priceless.
