Let's all put on our memory hats and travel back to elementary school?  What's the first science experiment you remember doing?  For me, it was making oobleck in 1st grade.  I had all but forgotten about the goopy stuff, until I found this awesome video...

Remember how oobleck felt like a solid when you poked it real hard, but like a liquid when you slowly dipped your hand into it?  That's because it's not really a liquid, but rather a "non-Newtonian fluid."

Check out the video to learn more, and see oobleck in slo-mo action!