A Florida man is behind bars after becoming the latest person to realize too late that bulletproof vests shouldn't be tested when people are wearing them. Cops say Alexandro Garibaldi, 24, fatally shot his 23-year-old cousin, Joaquin Mendez, in Tampa on Saturday night after Mendez tried on the vest and wondered aloud if it still worked, reports the Tampa Bay Times. A witness told police that Garibaldi said, "Let's see," then fired at his cousin. Officers called to the scene found the wounded cousin, who died after being hospitalized, and a vest with a bullet hole in it. Garibaldi, who initially told police he found his wounded cousin after hearing a shot, is being held without bond on a manslaughter charge, WESH reports. (This German woman was saved by her bra after wandering into the middle of a wild boar hunt.)