Elephant Toothpaste is the name of a classic chemistry experiment that's all about getting hydrogen peroxide to quickly break down into water and lots of oxygen. The result: Thick spirals of super-awesome foam.
There's lots of videos of this on the Internets, but I chose this one (despite the head-shakingly awkward co-host) because it demonstrates two versions of Elephant Toothpaste–one of which you can do at home with easily available materials. Fun!
As usual, if you've got a video you'd like to see on Saturday Morning Science Experiment, email me!
Thumbnail image courtesy Flickr user mauren veras, via CC.