Where did these teenagers get this idea from?

LEESBURG, FL (AP) -- Two homeless men are recovering from injuries after they were beaten by teens wielding bats and chunks of concretes. The three Leesburg teens were arrested yesterday and charged with attempted homicide. They are accused of breaking into an abandoned home and beating the men.

One of the victims sustained a punctured lung from a stab wound and head injuries, which took more than 100 staples to close. Another lost teeth after he was beaten with pieces of concrete blocks.

The teens were turned over to the Department of Juvenile Justice. (Source.)