Yeah, I don't know.  I pride myself on being fitter than most people around me, but I don't bring it up and get all specific with numbers and shit.  The only time I talk about what I'm actually capable of is to someone else in the context of a workout.  Such as a few days ago I met someone from around while I was trail running and we agreed to meet up yesterday for a run.  We talked a lot about pace and skill level then so that we could adjust the workout to both of our abilities.  That's the only time I recall talking about that in ages.