A guy walking around in public in his underwear would be a creepy pervert. A female walking around in her underwear (Booty shorts) in public, is "DOING IT BECAUSE SHE HAS EVERY RIGHT TO DO IT, YOU MISOGYNISTIC ASSHOLE!!" UMMMMM.... NO.... You have a right to wear it but there are places where you have that right. Public (where kids are) is not one of them.
It's easy to pose for a photograph to make you look awesome. It's a lot harder to come off as a total badass in the heat of the moment, with no warning, no setup, and no pretense. Hard, but not impossible: