I actually remember watching a documentary about people who cut of their legs, sometimes just one leg, other times even an arm. One guy put his leg on the train tracks and waited for it to get chopped off. When asked why he did it he said "I've never felt complete with both legs. Now I'm happy."
Another guy, more recent, cut off his penis at a mall.
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I hit her with the hammer on top of the head. She made a lot of noise and kept on making noise, so I hit her again.