An internet user who upon noticing that some internet content such as a blog, social networking update etc. has yet to be commented on, types the comment 'First'.
This often serves no purpose other than achieve some form of self-gratification, self-esteem boost, validation or attention-mongering.
An excellent indication of the low-mindset and intelligence level of those who indulge in such practices.
First trolls are excellent pickings for counter-trollers in flaming.
Why did he put 'first'?
They're just a first troll.