We find that at camp, the words messy and fun go hand-in-hand. This recipe was a pretty big hit, so we thought we would pass it on. Making Oobleck is great for parties, rainy days, or even a pretty cool science project. In some ways, Oobleck is similar to slime. But it has some very strange differences. Oobleck is both a solid and a liquid! "Impossible!," you say? Experience it for yourself.