Hey, now, you're encouraging terr'rists!

There's also http://www.thunderwear.com/, which I know people have used to smuggle liquids into stadiums, etc. Of course, both of these would be construed as "artful concealment" by the TSA and probably subject one to nasty, nasty fines and prosecution, whereas one's pockets are much easier to pass off as, "Oops--I forgot!"