There's an old (1950) but excellent SF short by C.M. Kornbluth, "The Silly Season"... It's a first contact story, as I recall, framed around a journalist who opens the narrative by talking about how late summer is "silly season" in the newspaper business.

Here's an example, "ripped from the headlines" of today's local paper:

The hip trend of wearing saggy pants could be at risk on the streets of Dallas.

Dallas school trustee Ron Price, with the backing of several City Council members, wants to prohibit pants that hang well below the waist. He wants an ordinance banning the look within city limits.

Mr. Price plans to address the council at today's meeting at 9 a.m. at City Hall. He said he's fed up with people who walk the streets "with their pants below their buttocks with their underwear exposed."

Several council members backed the idea Tuesday, with Bill Blaydes declaring, "It's an embarrassment to our city if we can't keep our pants up."

Mr. Price said he wants the city to create an ordinance or strengthen one that prohibits public lewdness. Such a rule would affect mainly young adults and children, some of whom get their pants several sizes too big to achieve the saggy effect.

"To me, it's disrespectful and dishonorable to women for men to walk around with their bottoms showing," Mr. Price said.

I think it looks stupid, too -- but legislation? (or should that be butt legislation?) naaaah... Peer pressure (a.k.a. ridicule) always works better when it comes to fashion trends. All anyone needs to do is point and laugh loudly.