OK, well I suppose I should elaborate a bit on how this may work.
This would be an opt-in expansion of the Ping feature. When a user is directly in front of you, you can tag them to make them ‘IT’. Their ‘mood’ would change to a custom, blinking graphic until they tag someone else.
Points could be awarded for the initial tag, then the person who is ‘IT’ can have a penalty such as losing 5 points.