They call it the horse track not because of the type of races hosted there, like some kind of derby event, because because attendees tend to find themselves turning into horses. No one seems to know why or how this happens...some bizarre property of the stadium grounds. You might expect this to be a turnoff, but a surprising number of visitors show up specifically to transform, to feel their bodies shifting, stretching, bulging outward...that last bit is why bottoms are considered optional. Some are intent on experiencing their shorts ripping as their ass expands, but many soon realize the fabric is more resilient than they expected, and it quickly becomes uncomfortable. So frequently, you'll see girls sauntering up with everything already on display, eliciting cheers from the crowd who know exactly why they're there, causing many to ignore the events taking place on the field in favor of the show...