Kevin Davis, 18, told detectives that he ‘fantasised’ about killing his mother, Kimberly, as well as his sister before he committed the shocking crime.
After he murdered his mother, he waited for his elder sister to return home but decided to cycle to a neighbours house.
When his neighbour answered the door, Davis told them to phone the police before confessing to the murder.
In an interview with police- which was played in court- the teenager told them: “Guess I lost my virginity to a dead corpse.”
When asked why he decided not to wait for his sister as he had planned, he said simply: “I had my fill of killing,” he said. “It seemed a little much.”
Davis also told police that Kimberly was ‘the best mother’ and that he regretted killing her.
“In a way, yes, but I wouldn’t take back what I did,” he said. “I did love her in a way. I’m a terrible, disgusting person.”
The teen decided to kill his mother when she refused to let him end his own life.
“I don’t have standards, I don’t have morals. A body’s a body — a piece of meat,” he said.
“I’m not mentally disturbed, I’m sane. I know what I did.”
Davis has been sentenced to life in prison for the brutal murder.