I really don't like "catching up" with people I accidentally run into.  Let's be honest:  We weren't close friends in high school.  We probably never even had a single conversation.  So why are you pretending to be interested in what I do?  C'mon, you don't really care.  You're just trying to be polite.  And I applaud you for that.  But there's really no need for it.  I'm ok with a simple handshake and a "hey".  Let's just leave it at that.  No hard feelings. #psychology