Have you noticed lately that some boys are wearing jeans so tight it looks like they've raided their sisters' closets? They probably have. We haven't seen jeans this tight since the '80s, but even then the boys stuck to the boys' department. No more. Now the boys are wearing girls' jeans, regardless of sexual preference. (And trust us, we've heard from confused parents -- not that there's anything wrong with it, but why would a straight boy dress like a girl? You can believe him -- it's really just a trend.) And when something's trendy, we think the best way to get it out of your (or their) system is at Buffalo Exchange, the King (or Queen, or King wearing Queen's clothing) of secondhand stores. We hear the boys regularly shop for girls' Sevens and Diesels at Buffalo, where you can find a used pair of jeans (boys' or girls') for a fraction of the original cost. Which means you'll have plenty in your bank account to accommodate the next trend.