I think it is a bad idea to try to deal with it in legal terms. Ironically, the sagging pants are a big help to many police officers successfully making arrests. A few months back there was a study on the great numbers of suspects who failed to escape on foot when their pants fell down.
LOLLOL It does seem like since the fad started in the 90's they have been getting lower and lower and lower. If you really like wearing a clown costume, join the circus.