One day, the guards decided to punish the prison's worst inmates: a serial killer, a terrorist and a necrophile

. The punishment? They would each be forced to watch the most terrifying horror movie ever made. The guards waited outside the theater and sent the serial killer in miutes later, he came running out, screaming and having wet his pants. Everyone laughed. Next, the terrorist went in. He lasted half the movie before he, too, came out crying and peeing himself. Again, everyone laughed. Finally, the necrophile went in. The guards waited. He watched the entire film. When the credits rolled, he walked out looking completely calm. Everyone was stunned. "The other two pissed themselves in fear!" the warden said. "Weren't you scared?" The necrophile shrugged. "Oh, I was terrified," he said. "But you can't pee with an erection."