. >> the first time i put on a stab vest was in indiana at wabash valley.t was definitely an uneasy feeling knowing i had to wear this to walk on to the unit an that the potential to be stabbed was higher here. it definitely makes you a little more on your toes and a lot more alert of your environment. >> we noticed that these vests said lock down. wile we're here we're going to slowly but surely change every stinkin' one of them. >> if i'm required to wear a stab vest i usually just make light of it. i joke around about how it adds ten pounds to me and the color don't go with my outfit. i make it into a joke. >> and a sense of humor goes a long way in breaking the ice with many of the inmates featured on lockup. >> coming up the one lockup crew member inmates love to rib. >> sometimes i'll hear people say stuff through their cell, hey fat boy. i have to look at myself, really? >> and later previously unseen clips from one of the more memorable inmates we ever met. the lowest prices of the season sale is going on now at gnc. save up to 50 percent on hundred