Some troll or whatever and you know him for you are talking to him in VMs.
I don't want to give some love to a user who insults/backstab people for no actual reason and just for a fun thing to do. He did not realize that joke is bad for it can be seen by the public, it makes me look bad or even worst at this site.
And worse, he is in my friends list. Its like a friend who is a traitor of some sort.