Suppose you have never seen a baseball game. All you know is cricket, and somebody sticks you at a Yankee/Red Sox game and says, "Do the play by play. Now. You're on!" There's no time to prepare. You don't know the rules, the names or the positions. All you know are the rhythms of your beloved cricketeers, but these "NY" players, whatever they're doing, it's not quite cricket. So you try to describe what's going on. What might that sound like?
The link to Ultrarunning, of course, is that nobody understands what we do. And if you try to describe it, the result may be incomprehensible.