Lesson: Guns are dangerous. According to the Post's NYPD Blotter, "A bonehead playing with a gun in a Jamaica home accidentally shot herself in the foot, sources said. Jennifer Carr, 22, allegedly fired the .25-caliber pistol in a pal's residence on 157th Street near 107th Avenue at about 1 a.m. Oct. 2." Carr, who went to the hospital after the shooting and was arrested a month later for weapons possession, allegedly said, "I saw [the gun] and picked it up because I was curious. It went off and hit my foot." This is almost as embarrassing as shooting yourself in the leg at a nightclub.