Cilla and Maddy take on the What's In The Box Slime Challenge, selecting ingredients from a mystery box to create their own slime. This video is part of the JKREW family, which includes Mommy, Daddy, ...

This is the 100 layer unbreakable mystery box challenge with a one hundred grand prize. My friends surprised me with the world's largest mystery box, there's a $100,000 prize in this giant mystery box ...