The one above about the amputated finger-end made me think of this, it will really make your eyes water. A guy I knew years ago (like about 35 years!) had his right arm severed at the elbow by a sheet-metal cutting machine. He told me that when the blade came down the first time, it cut his hand off. He said he didn't feel a thing, but instinctively made a grab for his severed hand WITH THE ARM THAT HAD JUST BEEN CUT! You guessed the next bit - the blade came down again and got him at the elbow! Again no pain, just a lot of blood. He stayed pain-free and conscious the whole time until he was anaesthetised at the hospital. The pain came later, after the operation to tidy up the stump (long before they started stitching them back on again). Why?

Just curious. :-)