We seem to have someone who pretends to be one of our regulars. (I guess he's getting bored living in his parents basement. Perhaps someday he'll have the courage to talk to a girl.)
How do you spot them....simple. Look at the post count. Someone who has been here for a long time will have a large number of posts. Hundreds if not thousands. Even if they claim they are using an "alt" post--which people don't--don't believe it. You can't fake the post count.
Report it to the webmaster and don't engage.