0codongolevBest Answer 11 years ago this one time, I filled a giant water balloon. then I put it in a round tupperware container. then I froze it. then I took it out the next day. I took it out of the container, took the balloon off, and chipped a hole in the top. it was filled with water that hadn't frozen yet. I poured it out. it's perfect for a 2-liter of pop.