A German court sent to a psychiatric institution a man who cut off his own penis because of the incessant sexual demands of his wife, whom he then killed with the same knife. The court in Kassel in central Germany, heard Tuesday that the wife of the man, 38, an alcoholic of Ghanaian origin, was obsessed with his organ and so he sliced it off with a long bread knife and threw it at her feet. He then cut the throat of his 50-year-old wife. The severed member was found and stitched back on. Defense and prosecution agreed that he should receive psychiatric treatment. Experts said he was not responsible for his actions at the time.