Most of us will never feel as much joy in our lives as Grover the Pug felt when he discovered his playpen had been converted into a ball pit. This is perhaps the most pure, uncut happiness one tiny, brachycephalic dog body can hold.

"We filled his playpen with plastic balls and his favorite toys and waited to see what happened - this was the result," writes Mel Stringer on YouTube.

What did she think would happen? Grover wouldn't jump in there and run in circles until he tuckered himself out? Please.

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[h/t Tastefully Offensive]