nobody was allowed to have a weapon. there was still conflict though. when one inmate found a way to carry a weapon, the others quickly adapted. after a short while it was common to carry a short weapon (like a short pipe) inside your anus. in order to use the weapon it had to be quickly pooped out. the first person to poop out their weapon usually won the fight, which is why it was practiced to perfection. even the best poop fighters still took about 10 seconds or more to get their weapon ready.
it was always fun to watch these fights. there was always these few seconds before a fight when nothing happened but two guys facing each other squatting down, pants down to their ankles, making a strange face. some guys with life sentences always touched themselves during those fights.
i've heard that some guards trade or sell copies of these fights taken by security cameras.