Preteen Pulls Knife on Mom Over Justin Bieber Costume

A mother in Surprise, Ariz., got the Halloween trick of her life this year when her 12-year-old son pulled a knife on her when she forbade him to dress up as "gay Justin Bieber."

According to The Arizona Republic, the boy's mother repeatedly told him that she would not allow him to wear his Halloween costume of choice because it was disrespectful. Sgt. Mark Ortega told the paper, "After throwing a tantrum and getting grounded from trick-or-treating, he grabbed a knife from his room and threatened to kill her."

The mother disarmed the boy, who was later arrested.