The June 2003 issue of Scientific American features Steve Mirsky's latest mirthful blurb on pointless security measures entitled The Yanked Clippers. From the article:
The polite inspector informed me that he had to check my shoes for explosives. I dutifully removed them and handed them to him. He picked them up one by one and slammed them down on the floor with full force. Apparently, as they hadn't exploded, they were not dangerous, and he handed them back to me.