`Duping Delight' (Duper's Delight)

The definition from the web site Psychopaths In Life:

> Duping delight is a particular micro expression a person will display that betrays a sense of enjoyment they are getting out of controlling and deceiving another person. It is a very important expression to watch out for in catching dishonesty in a person. In fact it is a form of body language pretty much exclusively reserved for pathological character types such as psychopaths.