ms. culbertson. >> i think given sandra's nature and given everything we'd seen, we were all anticipatingkind of crazy reaction from her. >> instead, culbertson put on a brave face before going to segregation. >> it sucks, but you know what? they'll never know it because i'll ride the hell out of it. i think it might be the problem. they ain't got me down yet. almost. >>> up next -- >> i believe that some people should be stabbed. >> an inmate known for trouble finds a soft spot for one of our producers. >> i love her. i do. i swear to god. you could memorize. that's the all-natural straight from the earth sugar she puts on her grapefruit. but is she eating sugar this week? she ate pizza. but she did blot it with a napkin. maybe she wants the all natural, zero calorie stuff. but if you're wrong, you're insinuating she's fat. ♪ save yourself. it's only natural. >>> prior to meeting tim duncan, we were told he was a hard core inmate who lived by his own rules at one of the most hard core prisons we had ever visited. >> i'm timmy duncan, aka turtle. i have always represented. i have always f