Being hopelessly behind the times, I was so psyched to read about the reaction that takes place if you pop a mint Mentos ("the freshmaker!") into a bottle of Diet Coke. Kaboom! It explodes into a great frothy fountain. Well, maybe "explodes" is a bit hyperbolic. It foams? That doesn't sound as exciting.
Anyway, I put my nieces up to the task. We sauntered down to the local general store and got two bottles of Diet Coke and a roll of Mentos. Here's the exciting result.
Now, of course, the next logical question is, what happens if you eat a Mentos and drink a Diet Coke? I tried to get my brother-in-law to give it a whirl, but he was feeling pretty humorless at the time. Or maybe he was just being a wuss.