Paranormal activity!

I am going to report on something that happened a few minutes ago and leave you to come up with an explanation. I was clearing the table after breakfast and was standing in the kitchen with my back to the door that enters onto the hallway. The door was open, as was the directly opposite door that opens on to the dining room. One of Coolie's bouncy balls came from behind me and I turned as I heard it. It bounced past me through the kitchen and out the door into the dining room, past Richard who was sitting at the table watching the news and came to rest by the book case. My first thought was that Coolie must have started it moving from the hallway but discovered he was lying in the middle of the living room whining about another ball that was under a chair. Richard had him in his view all the time and assures me he was nowhere near the hallway. Who threw that ball?