Guaranteed

Do you want to be sure and have a stupid fashion become even more fashionable? Outlaw it:

The NYT goes inside with a look at how some local lawmakers have had enough of kids wearing their pants so low that their underwear is exposed. Several towns have enacted, or are considering, ordinances to stop the practice. As a mayor of a town in Louisiana said, "We used to wear long hair, but I don't think our trends were ever as bad as sagging."

We never seem to learn anything. Generation have generation of parents make the same mistakes with kids. The better move would be to outlaw wearing pants around the hips, then you'd have a run on belts.