My Pretty Pony
Stephen King
 An elderly man, his death rapidly approaching, takes his young grandson up onto a hill behind his house and gives the boy his pocket watch. Then, standing among falling apple blossoms, the man also "gives instruction" on the nature of time: how when you grow up, it begins to move faster and faster, slipping away from you in great chunks if you don't hold tightly onto it. Time is a pretty pony, with a wicked heart.