Their scanners are so random. Out of the 4 flights I had to take during my trip in europe, I got searched twice even when I made sure I had NO metal on me whatsoever. (Including small buttons or zippers on pants).
It kind of annoys me too because most of the girls on the trip were always like "WHAT THE THEY SEARCHED ME I'M SO VIOLATED, THEY TOTALLY SEARCHED ME WAY MORE THOROUGHLY THAN YOU!".
Just because you're a girl being seached by a guy doesn't mean you've automatically been violated...