I was told point blank that wearing sagging pants was the way an inmate advertised that he was available for sex.
I think the vast majority of the folks wearing their pants this way would pull em up if they knew this. Or are too ignorant to read and or research the reason for sagging pants.
The others, of course, would keep them down, get caught by the police because they can't run, and end up, well, in prison where they would learn, too late, that wearing your pants this way has some real consequences.


Spirit flier 'threatens to smack' crew over his saggy pants - USATODAY.com