Privacy advocates lashed out at the full-body scanners the TSA began installing at its security checkpoints in 2007, likening the revealing X-ray images to an illegal "strip search" [source: Martín]. In 2013, hundreds of these scanners were removed from U.S. airports and replaced with less-invasive ones [source: Plungis].
But not before one unlucky passenger had her, uh, highly restrictive undergarment detected by a body scanner in 2012. Yes, the TSA agent on duty had to pull the traveler aside and confirm that she was, indeed, wearing a chastity belt. And no, the confusing piece of clothing was not confiscated, since it was not considered contraband. Plus, no one had the key [source: Burns].
If you're into weird lists like this, keep reading. We've got enough HowStuffWorks links on the next page to fill 13 airport security bins.