But out-of-focus isn't, I think quite what he meant! Follow the link to see how others have interpreted this challenge, and mean while, see what you think of these!
A Gazania in the pot on my patio
I tried to photograph a fan in motion, which blurred the blades. It only worked when the fan was actually slowing down!
The lake in our park
One of the five swans who live there (at the moment, no doubt the young cygnets will fly off to their own place later.)