You've either seen the Mentos and Coke experiment on YouTube or you've destroyed your kitchen trying it yourself. Wired has come up with a parlor trick that'll surprise your friends with a delayed explosion time: Mentos, frozen in ice cubes.
Admittedly, I don't know many people who let their drinks sit long enough for their ice to completely melt, but Wired suggests using warm Coke to help speed up the process. Next time you get some strange looking ice in your drink, I'd suggest you start chugging. [Wired via Neatorama via BoingBoing]