There were moments, prior to her death, when Kemper felt like punishing his mother. Kemper told investigators he had killed his mother to spare her the suffering and shame that knowledge of his crimes would bring. He said: “There were times when she was bitching and yelling at me that I felt like retaliating and walking over to the telephone in her presence and calling the police, to say, ‘Hello, I’m the coed killer,’ just to lay it on her.”

Kemper’s testimony in court revealed his desire to punish his mother did not end with the fatal hammer blow. He cut off his mother’s head, “put it on a shelf and screamed at it for an hour … threw darts at it,” and ultimately, “smashed her face in,” he recalled for the horrified court. [Kemper supposedly performed irrumatio with his mother’s head, but that story is not verified.]

He went even further and cut her tongue out, as well as her larynx, and placed them in the garbage disposal. However, the garbage disposal could not break down the tough vocal cords and ejected the tissue back into the sink. Kemper found it rather ironic: “That seemed appropriate. As much as she’d bitched and screamed and yelled at me over so many years.” 

Sources: “I was the hunter and they were the victims”: Interview with Edmund Kemper, Front Page Detective, by Marj von Beroldingen, March 1974 / Serial Homicide – Book 1 by RJ Parker, 2016 / Intercorpse – Necrophilia: sexual attraction towards corpses including sexual intercourse, by RJ Parker, 2019