An Oobleck is a non-Newtonian fluid that changes from a liquid state to a solid state when pressure is applied. The oobleck also behaves unlike conventional solids or liquid when thrown in the air, molded, heated, or vibrated.

Creeping Oobleck Trick

How to make an Oobleck
Ingredients:
1.5 cups of cornstarch
1 cup of water

The Amazing Oobleck! - The funniest bloopers are right here

Oobleck Pool Run