A teenage would-be bank robber in Detroit found himself imprisoned—and presumably regretting one or two life choices—within seconds of being handed money at a bank on Monday, police say. A police spokesman tells the Detroit Free Press that the 15-year-old gave a teller a note claiming he had a bomb and demanding money. As he left with the cash, the teller hit a button that trapped the youth between two sets of doors. The security system, known as a "man-trap," keeps intruders caged until police arrive, MLive reports. Police say the teen, who didn't have any explosives on him, was taken to a juvenile detention facility. (A man who stole a restaurant's tip jar ended up losing money.)