Like a reverse dog whistle, the 'Mosquito' emits a piercing beep at a frequency only young ears can hear. 'Cool stuff,' brags a spokesman for the British company selling the device. 'Drives kids crazy.'Nobody likes getting jostled by unruly punks, but there's something a tad creepy about "fixing" the problem with a human 'bug zapper' -- a machine that harasses guilty and innocent alike.Kids are getting used to this sort of thing, though. This generation has been poked, prodded, monitored, and controlled more than any other in American history.