The 15-year-old Nathan Moore and his friends were taunting the homeless man after having a couple of beers with him.

Killing Rex Baum was never part of the plan that day in 2004.

But they hurled anything they could find -rocks, bricks, even Baum's barbecue grill -and pounded the 49 year old with a pipe and with the baseball bat he kept at his campsite for protection. Ihrcke smeared his own feces on Baum's face before cutting him with a knife "to see if he was alive," Moore said.

After destroying Baum's camp, the boys left the homeless man under a piece of plastic where they hoped the "animals would eat" him...

Police found Baum's body two days after the teens attacked him. They bragged about it around town. Police picked them up and they described what happened. Ihrcke told police that killing "the bum" reminded him of playing a violent video game.

All three teens pleaded no contest to first degree reckless homicide charges and went to prison...

Moore recently turned 18 at Columbia Correctional Institution in Portage, Wisconsin, where he is serving a 15 year sentence.