An ex-SFer went to a dentist with a tooth ache. The dentist said hewould have to pull the tooth. The SFer said go ahead but I am tough anddon't need any pain killer, I've only felt pain twice in my whole life. The dentist thought he would humor him by not deadening the tooth kowing the pain would get to him. The SFer sat througout the extraction & didn't *flinch*. The dentist was amazed and said he had never had anyone sit through an extraction without pain killer. He then asked what in the world were the two times. The SFer said, "I was on a field exercise and had to take a crap real bad and I found a bent over tree to sit on.Well it was a big turd and when it hit the ground it triggered a bear trap that snapped on my balls that was the first time I ever felt real pain and the second was when I hit the end of the 8 foot chain."