Duping Delight?

Duping Delight is the secret sense of satisfaction someone has in duping (i.e., deceiving) others.

The politics is not the point, but since none of my students were familiar with the OJ trial in the US, I have had to find a local example.
Here is a spokesman for former president Chen explaining the assassination attempt. I don't know the real meaning of his "mystery smile," but it might well be an example of duping delight.

You can see the "mystery smile" at around the 15 second mark.