Shirt update. (I.e update of this.) A Samizdata commenter (Emmanuel Goldstein no less) says go here to read what Steve Sailer said about it. This is what he said (you have to scroll down very patiently):

Lots of fascinating suggestions from you all about why guys on the prowl for girls these days don't tuck in their shirts:

- To cover up their pot bellies. This is probably especially true for blacks, many of whom have gotten pretty fat in the decade of so since it became uncool among blacks (thank God) to look like some human skeleton on the pipe.

- To not look like some neat freak homosexual

- To look like a bad boy -- "Think of Brad Pitt -- a handsome guy who uglifies himself with greasy, stick-out hair, two-day beard stubble, shirttails out and collar flapping up. This look defuses the deregatory charges of "pretty boy," "Pat Boone," "clean-cut," and promotes a raffish devil-may-care effect."

- Because they're packing concealed weapons. (I don't think this is literally true very often, but certainly the long-term fashion for loose clothes among youths traces back in part to the desire of crack dealers to carry guns without cops noticing. Rappers took this style and diffused it to the suburbs.) Or maybe just a flask for underage drinking.

But you see I didn't have any of this in mind. I just thought I had noticed that smart was being redefined to include having your shirt out. What Sailer and his commenters/emailers/lowlifer correspondents are saying is that the street yobbo style has taken a new twist.

This tells me that in six months it will be gone, and replaced by some other horror. Sorry I mentioned it.