1. Watch the part where the neighbor mom and Lois are lying on beach chairs by the pool and are discussing honest doctors.

2. Watch closely in the background as the camera shifts from the neighbor mom to Lois.

3. If you look to the very right of your screen in the pool you see a green inflatable pool toy floating in the pool. The toy is floating forward.

4. The camera then does a shot on Lois, and then back to the neighbor mom. In the same spot in the pool, here comes the pool toy entering the screen! And there wasn't anybody in the pool to move it!