A man has cost himself an extra year behind bars after he sprayed chemicals in a fellow inmate’s eyes at Warren County Jail.The inmate, Scotty Neisz, 40, entered a guilty plea before General Sessions Judge Bill Locke to the lesser charge of simple assault. He was ordered to serve an 11-month, 29-day sentence for the misdemeanor crime. He faced three to six years in prison had he been convicted of his original felony assault charge.