Long before people got all grumpy over the current TSA thing I was pulled aside in Tokyo when arriving from Thailand. The lady checking luggage happened to open the bag that had several diapers left over that had been purchased in Thailand (Euroform, I think, or something similar). She was understandably confused, so she signaled to a security guy nearby who then pulled me into a back room for privacy. It ended up being three security guys and their manager drilling me with questions about my diapers, my vacation and my stay in Japan. At the time I was coming off a vacation in Thailand, intending on spending the better part of a month in Tokyo. The diapers, I explained, were because I sometimes wet while sleeping and was afraid I'd fall asleep on the plane. (a lie)
They thoroughly searched through my luggage, took all the fluids and powders away to be tested (shampoo, lotion, etc.) and had me remove the diaper I had been wearing in front of them. By this point I had pretty much ceased being embarrassed and started finding the experience immensely amusing. Putting the removed diaper in a shallow box they set on the desk in front of me, one of the security guys helpfully pointed out that the diaper was a little wet before taking it away for testing. After all the testing came back negative, they asked if I needed to put another diaper on. Keeping with the story, I said that I wouldn't need one until leaving the airport, and would do that at a later time in the privacy of an airport bathroom. Accepting that, they then took me to the airport hospital, where I was x-rayed for reasons unknown to me at the time.
After all was said and done, they apologized profusely, explaining that they were concerned I may had been smuggling drugs in from Thailand. It apparently isn't unheard of for drugs to be smuggled into countries inside of baby diapers, and they thought the combination of coming from Thailand and having adult diapers as a foreigner was rather odd. The X-ray was to make certain I wasn't carrying any drugs into the country "on the inside". They ended up giving me a card for a free medical visit at the Narita hospital as a form of compensation. I never did take advantage of that.
Anyway, people complaining about TSA practices needs to keep things in perspective. The radiation involved is pretty minor; you'll receive more on most flights simply as a result of being that high in the atmosphere for an extended period of time. If you've ever had an X-ray, that was many dozens of times more powerful than one run through the airport scanners. At the very least consider that if you're only an occasional traveller the daily business travelers and/or airplane crew are going to be going through those scanners many dozens of times more often than you... they get to be the public's canaries in the coal mine, if you will.
Beware of fear, it is a powerful motivator.
Others will wield it to manipulate you,
worried of thoughtful decent - if allowed.