Crab Soccer

This is what we do for fun.
That stability ball has about 2-3 liters of water sloshing around in it, making its movements erratic and hilarious.
Those students are playing crab-walk soccer with it.

I had fun.

There was a moment when one of them used his feet to throw the ball to his teammate; his teammate was unprepared to move quickly from his hands and ended up taking a sloshing stability ball right in the face... They both had to stop for a moment, they were laughing so hard. Tears-down-face laughing. Fantastic.
Who doesn't need that, really?