a pest. a person who turns out to be the kind of friend you don't really want around, but can't seem to get rid of. The kind of person who has no life and sends spam emails to a bunch of people he he barely knows just so he can feel like he is communicating and has a life. The kind of person who is not above using emotional blackmail to get you to be friends with them.
that guy is such a herb! I never respond to his emails and the creep calls me out of the blue last night to bullshit. he needs to get a life!