A stress relief toy, the idea came from the Oobleck attributes, the material resulting by mixing cold water with corn flour, is a non-Newtonian fluid which hardens when stress is applied. By breaking the hard shell, you find the egg inside containing the Oobleck in it, if squeezed gently it will behave as a thick fluid or a “soft boiled egg” but if beaten it hardens as a “hardboiled egg” revealing the yolk inside.