The kids use my rolling stool as a race car, which is why the padded seat is already torn.

What does The kids use my rolling stool as a race car, which is why the padded seat is already torn. mean?

The kids use my rolling stool as a race car, which is why the padded seat is already torn.

The kids use my rolling stool as a race car, which is why the padded seat is already torn. in other languages