Whether you are male or female, if you wear shorts that do not go right up against your skin - but, rather, hang loosely around your thighs - when you do Standing Bow Pulling pose, we will be able to see whether or not you are wearing underwear.
More importantly, should you choose to NOT wear underwear under your loosely hanging shorts, we will be able to see all your "goods in the hood" contained in the shorts.
So, for men, this means we will be able to see your balls. For women, we'll see whatever you got hanging around down in your shorts too.
So for the love of Sweet Baby Jesus on Christmas morning, please wear underwear. I don't want to inadvertently see what you're packing.