What?

A few days ago someone, in all seriousness, called me an introvert.  Me, an introvert?  Really?  I don't think I have an introverted bone in my body.  I'm not sure what prompted this person to think that of me.  I am not their biggest fan, so I wasn't talking to them very much.  But they've seen me in social situations, so they know what I am like, usually.  But introverted?  Me?  I don't think so.  I'm pretty extroverted and that is not likely to change.