I assume it's a joke. If it was meant to be believable, it needs more work. The ball is a "cutout" static image. You can tell this because the lighting on the ball doesn't match the ambient lighting AND the direction of illumination on the ball changes as it rotates. In addition, the ball, while rotating, is very static in it's location within the frame, which wouldn't happen in "real life". It's still pretty funny and I'm glad it was posted. I like funny. I see it in the mirror every morning.