Kids, friends, and family go head-to-head in this hilarious cup stacking challenge using just a cardboard box and cups! It’s a simple DIY party game that’s easy to set up and full of laughs.

The final round of the Carlmont Cup brought friendly competition and unexpected turns to the game, as students faced off in two exciting games.   A group of seniors went head-to-head with a team of ...

Editor's note: This segment was rebroadcast on Sept. 30, 2025. Click here for that audio. In the early 2000s, thousands of U.S. schools had their students race the clock to stack cups in gym class.