At BWI, I told the officer who directed me to the back-scatter that I preferred a pat-down. I did this in order to see how effective the manual search would be. When I made this request, a number of TSA officers, to my surprise, began laughing. I asked why. One of them -- the one who would eventually conduct my pat-down -- said that the rules were changing shortly, and that I would soon understand why the back-scatter was preferable to the manual search.
...
"What am I not going to like?" I asked.

"We have to search up your thighs and between your legs until we meet resistance," he explained.

"Resistance?" I asked.

"Your testicles," he explained.

...

I asked him if he was looking forward to conducting the full-on pat-downs. "Nobody's going to do it," he said, "once they find out that we're going to do."

In other words, people, when faced with a choice, will inevitably choose the Dick-Measuring Device over molestation? "That's what we're hoping for. We're trying to get everyone into the machine." He called over a colleague. "Tell him what you call the back-scatter," he said. "The Dick-Measuring Device," I said. "That's the truth," the other officer responded.

The pat-down at BWI was fairly vigorous, by the usual tame standards of the TSA, but it was nothing like the one I received the next day at T.F. Green in Providence. Apparently, I was the very first passenger to ask to opt-out of back-scatter imaging. Several TSA officers heard me choose the pat-down, and they reacted in a way meant to make the ordinary passenger feel very badly about his decision. One officer said to a colleague who was obviously going to be assigned to me, "Get new gloves, man, you're going to need them where you're going."

The agent snapped on his blue gloves, and patiently explained exactly where he was going to touch me. I felt like a sophomore at Oberlin.

"I'm going to run my hands up your thighs, and then feel your buttocks, then I'm going to reach under you until I meet --"

"Resistance?" I interrupted.

"Yes, resistance. Do you want to go into a private room?" he asked.

"Are you asking me into a private room?" I said. He looked confused. I said, "No, here is fine."

He felt me up good, but not great. ... But it was the fairly-full Monty.

I draw three lessons from this week's experience: The pat-down, while more effective than previous pat-downs, will not stop dedicated and clever terrorists from smuggling on-board small weapons or explosives.

...

The second lesson is that the effectiveness of pat-downs does not matter very much, because the obvious goal of the TSA is to make the pat-down embarrassing enough for the average passenger that the vast majority of people will choose hi-tech humiliation over the low-tech ball check.